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Maps have been one of the most important human inventions, allowing humans to explain and navigate their way. When and how the earliest maps were made is unclear, but maps of local terrain are believed to have been independently invented by many cultures. The earliest putative maps include
cave painting In archaeology, cave paintings are a type of parietal art (which category also includes petroglyphs, or engravings), found on the wall or ceilings of caves. The term usually implies prehistoric art, prehistoric origin. These paintings were often c ...
s and etchings on tusk and stone. Maps were produced extensively by ancient
Babylon Babylon ( ) was an ancient city located on the lower Euphrates river in southern Mesopotamia, within modern-day Hillah, Iraq, about south of modern-day Baghdad. Babylon functioned as the main cultural and political centre of the Akkadian-s ...
, Greece, Rome, China, and India. The earliest maps ignored the curvature of Earth's surface, both because the shape of the Earth was uncertain and because the curvature is not important across the small areas being mapped. However, since the age of
Classical Greece Classical Greece was a period of around 200 years (the 5th and 4th centuries BC) in ancient Greece,The "Classical Age" is "the modern designation of the period from about 500 B.C. to the death of Alexander the Great in 323 B.C." ( Thomas R. Mar ...
, maps of large regions, and especially of the world, have used
projection Projection or projections may refer to: Physics * Projection (physics), the action/process of light, heat, or sound reflecting from a surface to another in a different direction * The display of images by a projector Optics, graphics, and carto ...
from a model globe to control how the inevitable distortion gets apportioned on the map. Modern methods of transportation, the use of
surveillance aircraft Surveillance aircraft are aircraft used for surveillance. They are primarily operated by military forces and government agencies in roles including intelligence gathering, maritime patrol, battlefield and airspace surveillance, observation (e. ...
, and more recently the availability of
satellite imagery Satellite images (also Earth observation imagery, spaceborne photography, or simply satellite photo) are images of Earth collected by imaging satellites operated by governments and businesses around the world. Satellite imaging companies sell im ...
have made documentation of many areas possible that were previously inaccessible. Free online services such as
Google Earth Google Earth is a web mapping, web and computer program created by Google that renders a 3D computer graphics, 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposition, superimposing satelli ...
have made accurate maps of the world more accessible than ever before.


Etymology

The English term ''
cartography Cartography (; from , 'papyrus, sheet of paper, map'; and , 'write') is the study and practice of making and using maps. Combining science, aesthetics and technique, cartography builds on the premise that reality (or an imagined reality) can ...
'' is modern, borrowed from the French ''cartographie'' in the 1840s, itself based on
Middle Latin Medieval Latin was the form of Literary Latin used in Roman Catholic Western Europe during the Middle Ages. It was also the administrative language in the former Roman Provinces of Mauretania, Numidia and Africa Proconsularis under the Vandals ...
''carta'' "map".


Pre-modern era


Earliest known maps

It is not always clear whether an ancient artifact had been wrought as a map or as something else. The definition of "map" is also not precise. Thus, no single artifact is generally accepted to be the earliest surviving map. Candidates include: * A map-like representation of a mountain, river, valleys and routes around Pavlov in the
Czech Republic The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the south ...
, carved on a mammoth tusk, that has been dated to 25,000 BC. * An
Aboriginal Australian Aboriginal Australians are the various indigenous peoples of the Australian mainland and many of its islands, excluding the ethnically distinct people of the Torres Strait Islands. Humans first migrated to Australia 50,000 to 65,000 year ...
cylcon that may be as much as 20,000 years old that is thought to depict the
Darling River The Darling River (or River Darling; Paakantyi: ''Baaka'' or ''Barka''), is the third-longest river in Australia, measuring from its source in northern New South Wales to its confluence with the Murray River at Wentworth. Including its long ...
. Schøyen Collection
MS 5087/36, Cylcon (Yurda), possibly with map of Darling River
, commentary.
* A map etched on a mammoth bone at Mezhyrich that is about 15,000 years old. * Dots dating to 14,500 BC found on the walls of the
Lascaux Lascaux ( , ; , "Lascaux Cave") is a network of caves near the village of Montignac, Dordogne, Montignac, in the Departments of France, department of Dordogne in southwestern France. Over 600 Parietal art, parietal cave painting, wall paintin ...
caves map of part of the night sky, including the three bright stars
Vega Vega is the brightest star in the northern constellation of Lyra. It has the Bayer designation α Lyrae, which is Latinised to Alpha Lyrae and abbreviated Alpha Lyr or α Lyr. This star is relatively close at only from the Sun, and ...
, Deneb, and
Altair Altair is the brightest star in the constellation of Aquila (constellation), Aquila and the list of brightest stars, twelfth-brightest star in the night sky. It has the Bayer designation Alpha Aquilae, which is Latinisation of name ...
(the Summer Triangle asterism), as well as the
Pleiades The Pleiades (), also known as Seven Sisters and Messier 45 (M45), is an Asterism (astronomy), asterism of an open cluster, open star cluster containing young Stellar classification#Class B, B-type stars in the northwest of the constellation Tau ...
star cluster. The
Cuevas de El Castillo The Cueva del Castillo contains both a decorated cave and an archaeological site, within the complex of the Caves of Monte Castillo, in Puente Viesgo, Cantabria, Spain. The archaeological stratigraphy has been divided into around 19 layers ...
in Spain that contains a dot map of the Corona Borealis constellation dating from 12,000 BC. * A polished chunk of
sandstone Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sand ...
from a cave in Spanish
Navarre Navarre ( ; ; ), officially the Chartered Community of Navarre, is a landlocked foral autonomous community and province in northern Spain, bordering the Basque Autonomous Community, La Rioja, and Aragon in Spain and New Aquitaine in France. ...
, dated to 14,000 BC, that may be symbols for landscape features, such as hills or dwellings, superimposed on animal etchings. Alternatively, it may also represent a spiritual landscape, or simple incisings. * The Ségognole 3 rock shelter in the
Paris Basin The Paris Basin () is one of the major geological regions of France. It developed since the Triassic over remnant uplands of the Variscan orogeny (Hercynian orogeny). The sedimentary basin, no longer a single drainage basin, is a large sag in ...
of
France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
contains what is speculated to be a miniature representation of the surrounding landscape, modelled to reflect natural water flows and geomorphological features of the region. It may be the oldest three-dimensional map, and dates back 13,000 years ago, around 12,000 to 11,000 BC. * Another ancient picture that resembles a map that was created in the late 7th millennium BC in Çatalhöyük,
Anatolia Anatolia (), also known as Asia Minor, is a peninsula in West Asia that makes up the majority of the land area of Turkey. It is the westernmost protrusion of Asia and is geographically bounded by the Mediterranean Sea to the south, the Aegean ...
, modern
Turkey Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia (country), Georgia, Armen ...
. This wall painting may represent a plan of this Neolithic village; however, recent scholarship has questioned the identification of this painting as a map. * The "Saint-Bélec slab" (2200–1600 BC), whose lines and symbols have been argued to represent a cadastral plan of a part of western Brittany.


Ancient Near East

Maps in Ancient
Babylonia Babylonia (; , ) was an Ancient history, ancient Akkadian language, Akkadian-speaking state and cultural area based in the city of Babylon in central-southern Mesopotamia (present-day Iraq and parts of Kuwait, Syria and Iran). It emerged as a ...
were made by using accurate
surveying Surveying or land surveying is the technique, profession, art, and science of determining the land, terrestrial Plane (mathematics), two-dimensional or Three-dimensional space#In Euclidean geometry, three-dimensional positions of Point (geom ...
techniques. For example, a 7.6 × 6.8 cm
clay tablet In the Ancient Near East, clay tablets (Akkadian language, Akkadian ) were used as a writing medium, especially for writing in cuneiform, throughout the Bronze Age and well into the Iron Age. Cuneiform characters were imprinted on a wet clay t ...
found in 1930 at Ga-Sur, near contemporary
Kirkuk Kirkuk (; ; ; ) is a major city in northern Iraq, serving as the capital of the Kirkuk Governorate. The city is home to a diverse population of Kurds, Iraqi Turkmen, Iraqi Turkmens and Arabs. Kirkuk sits on the ruins of the original Kirkuk Cit ...
, shows a map of a river valley between two hills.
Cuneiform Cuneiform is a Logogram, logo-Syllabary, syllabic writing system that was used to write several languages of the Ancient Near East. The script was in active use from the early Bronze Age until the beginning of the Common Era. Cuneiform script ...
inscriptions label the features on the map, including a plot of land described as 354 iku (12 hectares) that was owned by a person called Azala. Most scholars date the tablet to the 25th to 24th century BC. Hills are shown by overlapping semicircles, rivers by lines, and cities by circles. The map also is marked to show the
cardinal directions The four cardinal directions or cardinal points are the four main compass directions: north (N), south (S), east (E), and west (W). The corresponding azimuths ( clockwise horizontal angle from north) are 0°, 90°, 180°, and 270°. The four ...
. An engraved map from the Kassite period (14th–12th centuries BC) of Babylonian history shows walls and buildings in the holy city of
Nippur Nippur (Sumerian language, Sumerian: ''Nibru'', often logogram, logographically recorded as , EN.LÍLKI, "Enlil City;"I. E. S. Edwards, C. J. Gadd, N. G. L. Hammond, ''The Cambridge Ancient History: Prolegomena & Prehistory'': Vol. 1, Part 1, Ca ...
. The
Babylonian World Map Babylonian may refer to: * Babylon, a Semitic Akkadian city/state of ancient Mesopotamia founded in 1894 BC * Babylonia, an ancient Akkadian-speaking Semitic nation-state and cultural region based in central-southern Mesopotamia (present-day Iraq) ...
, the earliest surviving map of the world ( BC), is a symbolic, not a literal representation. It deliberately omits peoples such as the
Persians Persians ( ), or the Persian people (), are an Iranian ethnic group from West Asia that came from an earlier group called the Proto-Iranians, which likely split from the Indo-Iranians in 1800 BCE from either Afghanistan or Central Asia. They ...
and
Egyptians Egyptians (, ; , ; ) are an ethnic group native to the Nile, Nile Valley in Egypt. Egyptian identity is closely tied to Geography of Egypt, geography. The population is concentrated in the Nile Valley, a small strip of cultivable land stretchi ...
, who were well known to the Babylonians. The area shown is depicted as a circular shape surrounded by water, which fits the religious image of the world in which the Babylonians believed.
Phoenicia Phoenicians were an Ancient Semitic-speaking peoples, ancient Semitic group of people who lived in the Phoenician city-states along a coastal strip in the Levant region of the eastern Mediterranean, primarily modern Lebanon and the Syria, Syrian ...
n sailors made major advances in seafaring and exploration. It is recorded that the first
circumnavigation Circumnavigation is the complete navigation around an entire island, continent, or astronomical object, astronomical body (e.g. a planet or natural satellite, moon). This article focuses on the circumnavigation of Earth. The first circumnaviga ...
of Africa was possibly undertaken by Phoenician explorers employed by Egyptian
pharaoh Pharaoh (, ; Egyptian language, Egyptian: ''wikt:pr ꜥꜣ, pr ꜥꜣ''; Meroitic language, Meroitic: 𐦲𐦤𐦧, ; Biblical Hebrew: ''Parʿō'') was the title of the monarch of ancient Egypt from the First Dynasty of Egypt, First Dynasty ( ...
Necho II Necho II (sometimes Nekau, Neku, Nechoh, or Nikuu; Greek: Νεκώς Β'; ) of Egypt was a king of the 26th Dynasty (610–595 BC), which ruled from Sais. Necho undertook a number of construction projects across his kingdom. In his reign, accor ...
c. 610–595 BC. In ''The Histories'', written 431–425 BC,
Herodotus Herodotus (; BC) was a Greek historian and geographer from the Greek city of Halicarnassus (now Bodrum, Turkey), under Persian control in the 5th century BC, and a later citizen of Thurii in modern Calabria, Italy. He wrote the '' Histori ...
cast doubt on a report of the Sun observed shining from the north. He stated that the phenomenon was observed by Phoenician explorers during their circumnavigation of Africa ( ''The Histories'', 4.42) who claimed to have had the Sun on their right when circumnavigating in a clockwise direction. To modern historians, these details confirm the truth of the Phoenicians' report, and even suggest the possibility that the Phoenicians knew about the
spherical Earth Spherical Earth or Earth's curvature refers to the approximation of the figure of the Earth as a sphere. The earliest documented mention of the concept dates from around the 5th century BC, when it appears in the writings of Ancient Greek philos ...
model. However, nothing certain about their knowledge of geography and navigation has survived. The historian Dmitri Panchenko theorizes that it was the Phoenician circumnavigation of Africa that inspired the theory of a spherical Earth by the 5th century BC.


Ancient Greece

Many scholars throughout history, such as
Strabo Strabo''Strabo'' (meaning "squinty", as in strabismus) was a term employed by the Romans for anyone whose eyes were distorted or deformed. The father of Pompey was called "Gnaeus Pompeius Strabo, Pompeius Strabo". A native of Sicily so clear-si ...
, Kish, and Dilke, consider
Homer Homer (; , ; possibly born ) was an Ancient Greece, Ancient Greek poet who is credited as the author of the ''Iliad'' and the ''Odyssey'', two epic poems that are foundational works of ancient Greek literature. Despite doubts about his autho ...
to be the founder of the early Greek conception of Earth, and therefore of geography.
Homer Homer (; , ; possibly born ) was an Ancient Greece, Ancient Greek poet who is credited as the author of the ''Iliad'' and the ''Odyssey'', two epic poems that are foundational works of ancient Greek literature. Despite doubts about his autho ...
conceived Earth to be a disk surrounded by a constantly moving stream of Ocean,Brown an idea which would be suggested by the appearance of the horizon as it is seen from a mountaintop or from a seacoast. This model was accepted by the early
Greeks Greeks or Hellenes (; , ) are an ethnic group and nation native to Greece, Greek Cypriots, Cyprus, Greeks in Albania, southern Albania, Greeks in Turkey#History, Anatolia, parts of Greeks in Italy, Italy and Egyptian Greeks, Egypt, and to a l ...
. Homer and his Greek contemporaries knew very little of the Earth beyond the Libyan desert of
Egypt Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northe ...
, the southwest coast of
Asia Minor Anatolia (), also known as Asia Minor, is a peninsula in West Asia that makes up the majority of the land area of Turkey. It is the westernmost protrusion of Asia and is geographically bounded by the Mediterranean Sea to the south, the Aegean ...
, and the northern boundary of the Greek homeland. Furthermore, the coast of the Black Sea was only known through myths and legends that circulated during his time. In his poems there is no mention of Europe and Asia as geographical concepts. That is why the big part of Homer's world that is portrayed on this interpretive map represents lands that border on the
Aegean Sea The Aegean Sea is an elongated embayment of the Mediterranean Sea between Europe and Asia. It is located between the Balkans and Anatolia, and covers an area of some . In the north, the Aegean is connected to the Marmara Sea, which in turn con ...
. The Greeks believed that they occupied the central region of Earth and its edges were inhabited by savage, monstrous
barbarians A barbarian is a person or tribe of people that is perceived to be primitive, savage and warlike. Many cultures have referred to other cultures as barbarians, sometimes out of misunderstanding and sometimes out of prejudice. A "barbarian" may ...
and strange animals and monsters: Homer's ''Odyssey'' mentions a great many of these. Additional statements about ancient geography are found in
Hesiod Hesiod ( or ; ''Hēsíodos''; ) was an ancient Greece, Greek poet generally thought to have been active between 750 and 650 BC, around the same time as Homer.M. L. West, ''Hesiod: Theogony'', Oxford University Press (1966), p. 40.Jasper Gr ...
's poems, probably written during the 8th century BC. Through the lyrics of ''
Works and Days ''Works and Days'' ()The ''Works and Days'' is sometimes called by the Latin translation of the title, ''Opera et Dies''. Common abbreviations are ''WD'' and ''Op'' for ''Opera''. is a didactic poem written by ancient Greek poet Hesiod around ...
'' and ''
Theogony The ''Theogony'' () is a poem by Hesiod (8th–7th century BC) describing the origins and genealogy, genealogies of the Greek gods, composed . It is written in the Homeric Greek, epic dialect of Ancient Greek and contains 1,022 lines. It is one ...
'', he shows to his contemporaries some definite geographical knowledge. He introduces the names of such rivers as
Nile The Nile (also known as the Nile River or River Nile) is a major north-flowing river in northeastern Africa. It flows into the Mediterranean Sea. The Nile is the longest river in Africa. It has historically been considered the List of river sy ...
, Ister (
Danube The Danube ( ; see also #Names and etymology, other names) is the List of rivers of Europe#Longest rivers, second-longest river in Europe, after the Volga in Russia. It flows through Central and Southeastern Europe, from the Black Forest sou ...
), the shores of the
Bosporus The Bosporus or Bosphorus Strait ( ; , colloquially ) is a natural strait and an internationally significant waterway located in Istanbul, Turkey. The Bosporus connects the Black Sea to the Sea of Marmara and forms one of the continental bo ...
and the
Euxine The Black Sea is a marginal sea, marginal Mediterranean sea (oceanography), mediterranean sea lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bound ...
(
Black Sea The Black Sea is a marginal sea, marginal Mediterranean sea (oceanography), mediterranean sea lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bound ...
), the coast of
Gaul Gaul () was a region of Western Europe first clearly described by the Roman people, Romans, encompassing present-day France, Belgium, Luxembourg, and parts of Switzerland, the Netherlands, Germany, and Northern Italy. It covered an area of . Ac ...
, the island of
Sicily Sicily (Italian language, Italian and ), officially the Sicilian Region (), is an island in the central Mediterranean Sea, south of the Italian Peninsula in continental Europe and is one of the 20 regions of Italy, regions of Italy. With 4. ...
, and a few other regions and rivers. His advanced geographical knowledge not only had predated Greek colonial expansions, but also was used in the earliest Greek world maps, produced by Greek mapmakers such as
Anaximander Anaximander ( ; ''Anaximandros''; ) was a Pre-Socratic philosophy, pre-Socratic Ancient Greek philosophy, Greek philosopher who lived in Miletus,"Anaximander" in ''Chambers's Encyclopædia''. London: George Newnes Ltd, George Newnes, 1961, Vol. ...
and
Hecataeus of Miletus Hecataeus of Miletus (; ; c. 550 – c. 476 BC), son of Hegesander, was an early Greek historian and geographer. Biography Hailing from a very wealthy family, he lived in Miletus, then under Persian rule in the satrapy of Lydia ...
, and
Ptolemy Claudius Ptolemy (; , ; ; – 160s/170s AD) was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine science, Byzant ...
using both observations by explorers and a mathematical approach. Early steps in the development of intellectual thought in
ancient Greece Ancient Greece () was a northeastern Mediterranean civilization, existing from the Greek Dark Ages of the 12th–9th centuries BC to the end of classical antiquity (), that comprised a loose collection of culturally and linguistically r ...
belonged to
Ionians The Ionians (; , ''Íōnes'', singular , ''Íōn'') were one of the traditional four major tribes of Ancient Greece, alongside the Dorians, Aeolians, and Achaeans. The Ionian dialect was one of the three major linguistic divisions of the ...
from their well-known city of
Miletus Miletus (Ancient Greek: Μίλητος, Mílētos) was an influential ancient Greek city on the western coast of Anatolia, near the mouth of the Maeander River in present day Turkey. Renowned in antiquity for its wealth, maritime power, and ex ...
in
Asia Minor Anatolia (), also known as Asia Minor, is a peninsula in West Asia that makes up the majority of the land area of Turkey. It is the westernmost protrusion of Asia and is geographically bounded by the Mediterranean Sea to the south, the Aegean ...
. Miletus was placed favourably to absorb aspects of
Babylonia Babylonia (; , ) was an Ancient history, ancient Akkadian language, Akkadian-speaking state and cultural area based in the city of Babylon in central-southern Mesopotamia (present-day Iraq and parts of Kuwait, Syria and Iran). It emerged as a ...
n knowledge and to profit from the expanding commerce of the
Mediterranean The Mediterranean Sea ( ) is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean basin and almost completely enclosed by land: on the east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern ...
. The earliest ancient Greek who is said to have constructed a map of the world is Anaximander of Miletus (), pupil of
Thales Thales of Miletus ( ; ; ) was an Ancient Greek philosophy, Ancient Greek Pre-Socratic philosophy, pre-Socratic Philosophy, philosopher from Miletus in Ionia, Asia Minor. Thales was one of the Seven Sages of Greece, Seven Sages, founding figure ...
. He believed that the Earth was a cylindrical form, a stone pillar suspended in space. The inhabited part of his world was circular, disk-shaped, and presumably located on the upper surface of the cylinder. For constructing his world map, Anaximander is considered by many to be the first mapmaker.Dilke Little is known about the map, which has not survived. Hekatæus of Miletus (550–475 BC) produced another map fifty years later that he claimed was an improved version of the map of his illustrious predecessor. Hecatæus's map describes the Earth as disk with an encircling Ocean, and with Greece placed in the center. This was a very popular contemporary Greek worldview, derived originally from the Homeric poems. Also, similar to many other early maps in antiquity, his map has no scale. As units of measurements, this map used "days of sailing" on the sea and "days of marching" on dry land. The purpose of this map was to accompany Hecatæus's geographical work that was called '' Periodos Ges'', or ''Journey Round the World''. ''Periodos Ges'' was divided into two books, "Europe" and "Asia", with the latter including Libya, the name of which was an ancient term for all of known Africa. The work divides the world into two continents, Asia and Europe. Hecatæus depicts the line between the Pillars of Hercules through the Bosporus, and the Don River as a boundary between the two. He was the first writer known to have thought that the Caspian flows into the encircling ocean—an idea that persisted long into the Hellenic period. He was particularly instructive about the Black Sea, adding many geographic places that already were known to Greeks through the colonization process. To the north of the Danube, according to Hecatæus, were the Rhipæan (gusty) Mountains, beyond which lived the Hyperboreans—peoples of the far north. Hecatæus depicted the origin of the Nile River at the southern encircling ocean. This assumption helped Hecatæus propose a solution to the mystery of the annual flooding of the Nile. He believed that the waves of the ocean were a primary cause of this occurrence. A map based on Hecataeus's was intended to aid political decision-making. According to
Herodotus Herodotus (; BC) was a Greek historian and geographer from the Greek city of Halicarnassus (now Bodrum, Turkey), under Persian control in the 5th century BC, and a later citizen of Thurii in modern Calabria, Italy. He wrote the '' Histori ...
, that map was engraved into a bronze tablet and was carried to Sparta by Aristagoras during the revolt of the Ionian cities against Persian rule from 499 to 494 BC.
Anaximenes of Miletus Anaximenes of Miletus (; ; ) was an Ancient Greece, Ancient Greek, Pre-Socratic philosophy, Pre-Socratic philosopher from Miletus in Anatolia (modern-day Turkey). He was the last of the three philosophers of the Ionian School (philosophy), Milesi ...
(6th century BC), who studied under Anaximander, rejected the views of his teacher regarding the shape of the Earth and instead, he visualized the Earth as a rectangular form supported by compressed air.
Pythagoras of Samos Pythagoras of Samos (;  BC) was an ancient Ionian Greek philosopher, polymath, and the eponymous founder of Pythagoreanism. His political and religious teachings were well known in Magna Graecia and influenced the philosophies of P ...
(–480 BC) speculated about the notion of a spherical Earth with a central fire at its core. He is sometimes incorrectly credited with the introduction of a model that divides a spherical Earth into five zones: one hot, two temperate, and two cold—northern and southern. This idea, known as the zonal theory of climate, is more likely to have originated at the time of
Aristotle Aristotle (; 384–322 BC) was an Ancient Greek philosophy, Ancient Greek philosopher and polymath. His writings cover a broad range of subjects spanning the natural sciences, philosophy, linguistics, economics, politics, psychology, a ...
. Scylax, a sailor, made a record of his
Mediterranean The Mediterranean Sea ( ) is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean basin and almost completely enclosed by land: on the east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern ...
voyages in BC. This is the earliest known set of Greek periploi, or sailing instructions, which became the basis for many future mapmakers, especially in the medieval period. The way in which the geographical knowledge of the Greeks advanced from the previous assumptions of the Earth's shape was through Herodotus and his conceptual view of the world. This map also did not survive and many have speculated that it was never produced. A possible reconstruction of his map is displayed adjacent. Herodotus traveled extensively, collecting information and documenting his findings in his books on Europe, Asia, and Libya. He also combined his knowledge with what he learned from the people he met. Herodotus wrote his '' Histories'' in the mid-5th century BC. Although his work was dedicated to the story of long struggle of the Greeks with the Persian Empire, Herodotus also included everything he knew about the geography, history, and peoples of the world. Thus, his work provides a detailed picture of the known world of the 5th century BC. Herodotus rejected the prevailing view of most 5th-century BC maps that the Earth is a disk surrounded by ocean. In his work he describes the Earth as an irregular shape with oceans surrounding only Asia and Africa. He introduces names such as the Atlantic Sea, and the Erythrean Sea, which translates as the "Red Sea". He also divided the world into three continents: Europe, Asia, and Africa. He depicted the boundary of Europe as the line from the
Pillars of Hercules The Pillars of Hercules are the promontory, promontories that flank the entrance to the Strait of Gibraltar. The northern Pillar, Calpe Mons, is the Rock of Gibraltar. A corresponding North African peak not being predominant, the identity of ...
through the
Bosphorus The Bosporus or Bosphorus Strait ( ; , colloquially ) is a natural strait and an internationally significant waterway located in Istanbul, Turkey. The Bosporus connects the Black Sea to the Sea of Marmara and forms one of the continental bo ...
and the area between the
Caspian Sea The Caspian Sea is the world's largest inland body of water, described as the List of lakes by area, world's largest lake and usually referred to as a full-fledged sea. An endorheic basin, it lies between Europe and Asia: east of the Caucasus, ...
and the
Indus River The Indus ( ) is a transboundary river of Asia and a trans-Himalayas, Himalayan river of South Asia, South and Central Asia. The river rises in mountain springs northeast of Mount Kailash in the Western Tibet region of China, flows northw ...
. He regarded the
Nile The Nile (also known as the Nile River or River Nile) is a major north-flowing river in northeastern Africa. It flows into the Mediterranean Sea. The Nile is the longest river in Africa. It has historically been considered the List of river sy ...
as the boundary between Asia and Africa. He speculated that the extent of Europe was much greater than was assumed at the time and left Europe's shape to be determined by future research. In the case of Africa, he believed that, except for the small stretch of land in the vicinity of Suez, the continent was in fact surrounded by water. However, he definitely disagreed with his predecessors and contemporaries about its presumed circular shape. He based his theory on the story of Pharaoh
Necho II Necho II (sometimes Nekau, Neku, Nechoh, or Nikuu; Greek: Νεκώς Β'; ) of Egypt was a king of the 26th Dynasty (610–595 BC), which ruled from Sais. Necho undertook a number of construction projects across his kingdom. In his reign, accor ...
, the ruler of Egypt between 609 and 594 BC, who had sent
Phoenicians Phoenicians were an ancient Semitic group of people who lived in the Phoenician city-states along a coastal strip in the Levant region of the eastern Mediterranean, primarily modern Lebanon and the Syrian coast. They developed a maritime civi ...
to circumnavigate Africa. Apparently, it took them three years, but they certainly did prove his idea. He speculated that the Nile River started as far west as the Ister River (Danube) in Europe and cut Africa through the middle. He was the first writer to assume that the Caspian Sea was separated from other seas and he recognised northern Scythia as one of the coldest inhabited lands in the world. Similar to his predecessors, Herodotus also made mistakes. He accepted a clear distinction between the civilized Greeks in the center of the Earth and the barbarians on the world's edges. In his ''Histories'' it is clear that he believed that the world became stranger and stranger when one traveled away from Greece, until one reached the ends of the Earth, where humans behaved as savages. While various previous Greek philosophers presumed the Earth to be spherical,
Aristotle Aristotle (; 384–322 BC) was an Ancient Greek philosophy, Ancient Greek philosopher and polymath. His writings cover a broad range of subjects spanning the natural sciences, philosophy, linguistics, economics, politics, psychology, a ...
(384–322 BC) is credited with proving the Earth's sphericity. His arguments may be summarized as follows: * The
lunar eclipse A lunar eclipse is an astronomical event that occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. Such an alignment occurs during an eclipse season, approximately every six months, during the full moon phase, ...
is always circular * Ships seem to sink as they move away from view and pass the horizon * Some stars can be seen only from certain parts of the Earth.


Hellenistic Mediterranean

A vital contribution to mapping the reality of the world came with a scientific estimate of the circumference of the earth. This event has been described as the first scientific attempt to give geographical studies a mathematical basis. The man credited for this achievement was
Eratosthenes Eratosthenes of Cyrene (; ;  – ) was an Ancient Greek polymath: a Greek mathematics, mathematician, geographer, poet, astronomer, and music theory, music theorist. He was a man of learning, becoming the chief librarian at the Library of A ...
(275–195 BC), a Greek scholar who lived in
Hellenistic In classical antiquity, the Hellenistic period covers the time in Greek history after Classical Greece, between the death of Alexander the Great in 323 BC and the death of Cleopatra VII in 30 BC, which was followed by the ascendancy of the R ...
North Africa. As described by
George Sarton George Alfred Leon Sarton (; 31 August 1884 – 22 March 1956) was a Belgian-American chemist and historian. He is considered the founder of the discipline of the history of science as an independent field of study. His most influential works were ...
, historian of science, "there was among them ratosthenes's contemporariesa man of genius but as he was working in a new field they were too stupid to recognize him". His work, including ''On the Measurement of the Earth'' and ''
Geographica The ''Geographica'' (, ''Geōgraphiká''; or , "Strabo's 17 Books on Geographical Topics") or ''Geography'', is an encyclopedia of geographical knowledge, consisting of 17 'books', written in Greek in the late 1st century BC, or early 1st cen ...
'', has only survived in the writings of later philosophers such as
Cleomedes Cleomedes () was a Greek astronomer who is known chiefly for his book ''On the Circular Motions of the Celestial Bodies'' (Κυκλικὴ θεωρία μετεώρων), also known as ''The Heavens'' (). Placing his work chronologically His bi ...
and
Strabo Strabo''Strabo'' (meaning "squinty", as in strabismus) was a term employed by the Romans for anyone whose eyes were distorted or deformed. The father of Pompey was called "Gnaeus Pompeius Strabo, Pompeius Strabo". A native of Sicily so clear-si ...
. He was a devoted geographer who set out to reform and perfect the map of the world. Eratosthenes argued that accurate mapping, even if in two dimensions only, depends upon the establishment of accurate linear measurements. He was the first to calculate the
Earth's circumference Earth's circumference is the distance around Earth. Measured around the equator, it is . Measured passing through the poles, the circumference is . Treating the Earth as a sphere, its circumference would be its single most important measuremen ...
(within 0.5 percent accuracy). His great achievement in the field of cartography was the use of a new technique of charting with meridians, his imaginary north–south lines, and parallels, his imaginary west–east lines. These axis lines were placed over the map of the Earth with their origin in the city of Rhodes and divided the world into sectors. Then, Eratosthenes used these earth partitions to reference places on the map. He also divided Earth into five climatic regions which was proposed at least as early as the late sixth or early fifth century BC by
Parmenides Parmenides of Elea (; ; fl. late sixth or early fifth century BC) was a Pre-Socratic philosophy, pre-Socratic ancient Greece, Greek philosopher from Velia, Elea in Magna Graecia (Southern Italy). Parmenides was born in the Greek colony of Veli ...
: a torrid zone across the middle, two frigid zones at extreme north and south, and two temperate bands in between. He was likely also the first person to use the word "geography".


Roman Empire


Pomponius Mela

Pomponius Mela Pomponius Mela, who wrote around AD 43, was the earliest known Roman geographer. He was born at the end of the 1st century BC in Tingentera (now Algeciras) and died  AD 45. His short work (''De situ orbis libri III.'') remained in use nea ...
is unique among ancient geographers in that, after dividing the earth into five zones, of which two only were habitable, he asserts the existence of antichthones, inhabiting the southern temperate zone inaccessible to the folk of the northern temperate regions from the unbearable heat of the intervening torrid belt. On the divisions and boundaries of Europe, Asia and Africa, he repeats Eratosthenes; like all classical geographers from
Alexander the Great Alexander III of Macedon (; 20/21 July 356 BC – 10/11 June 323 BC), most commonly known as Alexander the Great, was a king of the Ancient Greece, ancient Greek kingdom of Macedonia (ancient kingdom), Macedon. He succeeded his father Philip ...
(except
Ptolemy Claudius Ptolemy (; , ; ; – 160s/170s AD) was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine science, Byzant ...
) he regards the
Caspian Sea The Caspian Sea is the world's largest inland body of water, described as the List of lakes by area, world's largest lake and usually referred to as a full-fledged sea. An endorheic basin, it lies between Europe and Asia: east of the Caucasus, ...
as an inlet of the Northern Ocean, corresponding to the
Persian Gulf The Persian Gulf, sometimes called the Arabian Gulf, is a Mediterranean seas, mediterranean sea in West Asia. The body of water is an extension of the Arabian Sea and the larger Indian Ocean located between Iran and the Arabian Peninsula.Un ...
and the
Red Sea The Red Sea is a sea inlet of the Indian Ocean, lying between Africa and Asia. Its connection to the ocean is in the south, through the Bab-el-Mandeb Strait and the Gulf of Aden. To its north lie the Sinai Peninsula, the Gulf of Aqaba, and th ...
on the south.


Marinus of Tyre

Marinus of Tyre Marinus of Tyre (, ''Marînos ho Týrios'';  70–130) was a List of Graeco-Roman geographers, geographer, Cartography, cartographer and mathematician, who founded mathematical geography and provided the underpinnings of Claudius Ptolemy's i ...
was a Hellenized Phoenician geographer and cartographer. He founded mathematical geography and provided the underpinnings of
Ptolemy Claudius Ptolemy (; , ; ; – 160s/170s AD) was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine science, Byzant ...
's influential '' Geographia''. Marinus's geographical treatise is lost and known only from Ptolemy's remarks. He introduced improvements to the construction of maps and developed a system of nautical charts. His chief legacy is that he first assigned to each place a proper
latitude In geography, latitude is a geographic coordinate system, geographic coordinate that specifies the north-south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from −90° at t ...
and
longitude Longitude (, ) is a geographic coordinate that specifies the east- west position of a point on the surface of the Earth, or another celestial body. It is an angular measurement, usually expressed in degrees and denoted by the Greek lett ...
. His zero meridian ran through the westernmost land known to him, the Isles of the Blessed around the location of the Canary or
Cape Verde Islands Cape Verde or Cabo Verde, officially the Republic of Cabo Verde, is an island country and archipelagic state of West Africa in the central Atlantic Ocean, consisting of ten volcanic islands with a combined land area of about . These islands ...
. He used the parallel of
Rhodes Rhodes (; ) is the largest of the Dodecanese islands of Greece and is their historical capital; it is the List of islands in the Mediterranean#By area, ninth largest island in the Mediterranean Sea. Administratively, the island forms a separ ...
for measurements of latitude. Ptolemy mentions several revisions of Marinus's geographical work, which is often dated to AD 114 although this is uncertain. Marinus estimated a length of 180,000  stadia for the equator, roughly corresponding to a circumference of the Earth of 33,300 km, about 17% less than the actual value. He also carefully studied the works of his predecessors and the diaries of travelers. His maps were the first in the
Roman Empire The Roman Empire ruled the Mediterranean and much of Europe, Western Asia and North Africa. The Roman people, Romans conquered most of this during the Roman Republic, Republic, and it was ruled by emperors following Octavian's assumption of ...
to show China. He also invented
equirectangular projection The equirectangular projection (also called the equidistant cylindrical projection or la carte parallélogrammatique projection), and which includes the special case of the plate carrée projection (also called the geographic projection, lat/l ...
, which is still used in map creation today. A few of Marinus's opinions are reported by Ptolemy. Marinus was of the opinion that the
World Ocean The ocean is the body of salt water that covers approximately 70.8% of Earth. The ocean is conventionally divided into large bodies of water, which are also referred to as ''oceans'' (the Pacific, Atlantic, Indian, Antarctic/Southern, and ...
was separated into an eastern and a western part by the continents of Europe, Asia and Africa. He thought that the inhabited world stretched in latitude from Thule (
Norway Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of ...
) to Agisymba (around the
Tropic of Capricorn The Tropic of Capricorn (or the Southern Tropic) is the circle of latitude that contains the subsolar point at the December (or southern) solstice. It is thus the southernmost latitude where the Sun can be seen directly overhead. It also reach ...
) and in longitude from the Isles of the Blessed (around the Canaries) to Shera (China). Marinus also coined the term
Antarctic The Antarctic (, ; commonly ) is the polar regions of Earth, polar region of Earth that surrounds the South Pole, lying within the Antarctic Circle. It is antipodes, diametrically opposite of the Arctic region around the North Pole. The Antar ...
, referring to the opposite of the
Arctic Circle The Arctic Circle is one of the two polar circles, and the northernmost of the five major circle of latitude, circles of latitude as shown on maps of Earth at about 66° 34' N. Its southern counterpart is the Antarctic Circle. The Arctic Circl ...
.


Ptolemy

Ptolemy Claudius Ptolemy (; , ; ; – 160s/170s AD) was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine science, Byzant ...
(90–168), a Hellenized
Egyptian ''Egyptian'' describes something of, from, or related to Egypt. Egyptian or Egyptians may refer to: Nations and ethnic groups * Egyptians, a national group in North Africa ** Egyptian culture, a complex and stable culture with thousands of year ...
,
George Sarton George Alfred Leon Sarton (; 31 August 1884 – 22 March 1956) was a Belgian-American chemist and historian. He is considered the founder of the discipline of the history of science as an independent field of study. His most influential works were ...
(1936). "The Unity and Diversity of the Mediterranean World", ''Osiris'' 2, pp. 406–463 29
thought that, with the aid of astronomy and mathematics, the Earth could be mapped very accurately. Ptolemy revolutionized the depiction of the spherical Earth on a map by using
perspective projection Linear or point-projection perspective () is one of two types of graphical projection perspective in the graphic arts; the other is parallel projection. Linear perspective is an approximate representation, generally on a flat surface, of ...
, and suggested precise methods for fixing the position of geographic features on its surface using a
coordinate system In geometry, a coordinate system is a system that uses one or more numbers, or coordinates, to uniquely determine and standardize the position of the points or other geometric elements on a manifold such as Euclidean space. The coordinates are ...
with parallels of
latitude In geography, latitude is a geographic coordinate system, geographic coordinate that specifies the north-south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from −90° at t ...
and meridians of
longitude Longitude (, ) is a geographic coordinate that specifies the east- west position of a point on the surface of the Earth, or another celestial body. It is an angular measurement, usually expressed in degrees and denoted by the Greek lett ...
. Ptolemy's eight-volume atlas '' Geographia'' is a prototype of modern mapping and GIS. It included an index of place-names, with the latitude and longitude of each place to guide the search, scale, conventional signs with legends, and the practice of orienting maps so that north is at the top and east to the right of the map—an almost universal custom today. Yet with all his important innovations, however, Ptolemy was not infallible. His most important error was a miscalculation of the circumference of the Earth. He believed that
Eurasia Eurasia ( , ) is a continental area on Earth, comprising all of Europe and Asia. According to some geographers, Physical geography, physiographically, Eurasia is a single supercontinent. The concept of Europe and Asia as distinct continents d ...
covered 180° of the globe, which convinced
Christopher Columbus Christopher Columbus (; between 25 August and 31 October 1451 – 20 May 1506) was an Italians, Italian explorer and navigator from the Republic of Genoa who completed Voyages of Christopher Columbus, four Spanish-based voyages across the At ...
to sail across the Atlantic to look for a simpler and faster way to travel to India. Had Columbus known that the true figure was much greater, it is conceivable that he would never have set out on his momentous voyage.


''Tabula Peutingeriana''

In 2007, the ''
Tabula Peutingeriana ' (Latin Language, Latin for 'The Peutinger Map'), also known as Peutinger's Tabula, Peutinger tablesJames Strong (theologian) , James Strong and John McClintock (theologian) , John McClintock (1880)"Eleutheropolis" In: ''The Cyclopedia of Bibli ...
'', a 12th-century replica of a 5th-century road map, was placed on the UNESCO Memory of the World Register and displayed to the public for the first time. Although the scroll is well preserved and believed to be an accurate copy of an authentic original, it is on media that is now so delicate that it must be protected at all times from exposure to daylight.


China

The earliest known maps to have survived in China date to the 4th century BC. In 1986, seven ancient Chinese maps were found in an archeological excavation of a Qin State tomb in what is now
Fangmatan Fangmatan () is an archeological site located near Tianshui in China's Gansu province. The site was located within the Qin state, and includes several burials dating from the Warring States period through to the early Western Han. Tomb 1 The ...
, in the vicinity of Tianshui City,
Gansu Gansu is a provinces of China, province in Northwestern China. Its capital and largest city is Lanzhou, in the southeastern part of the province. The seventh-largest administrative district by area at , Gansu lies between the Tibetan Plateau, Ti ...
. Before this find, the earliest extant maps that were known came from the Mawangdui Han tomb excavation in 1973, which found three maps on silk dated to the 2nd century BC in the early
Han dynasty The Han dynasty was an Dynasties of China, imperial dynasty of China (202 BC9 AD, 25–220 AD) established by Liu Bang and ruled by the House of Liu. The dynasty was preceded by the short-lived Qin dynasty (221–206 BC ...
. The 4th-century BC maps from the State of Qin were drawn with black ink on wooden blocks. These blocks fortunately survived in soaking conditions due to underground water that had seeped into the tomb; the quality of the wood had much to do with their survival. After two years of slow-drying techniques, the maps were fully restored. The territory shown in the seven Qin maps overlap each other. The maps display tributary river systems of the
Jialing River The Jialing River, formerly known by numerous other names, is a major tributary of the Yangtze River in the Sichuan Basin. It is named after the Jialing Valley in Feng County, Shaanxi through which it flows. The Jialing River's most notable c ...
in Sichuan, in a total measured area of 107 by 68 km. The maps featured rectangular symbols encasing character names for the locations of administrative counties. Rivers and roads are displayed with similar line symbols; this makes interpreting the map somewhat difficult, although the labels of rivers placed in order of stream flow are helpful to modern day cartographers. These maps also feature locations where different types of timber can be gathered, while two of the maps state the distances in mileage to the timber sites. In light of this, these maps are perhaps the oldest economic maps in the world since they predate
Strabo Strabo''Strabo'' (meaning "squinty", as in strabismus) was a term employed by the Romans for anyone whose eyes were distorted or deformed. The father of Pompey was called "Gnaeus Pompeius Strabo, Pompeius Strabo". A native of Sicily so clear-si ...
's economic maps. In addition to the seven maps on wooden blocks found at Tomb 1 of Fangmatan, a fragment of a paper map was found on the chest of the occupant of Tomb 5 of Fangmatan in 1986. This tomb is dated to the early
Western Han The Han dynasty was an imperial dynasty of China (202 BC9 AD, 25–220 AD) established by Liu Bang and ruled by the House of Liu. The dynasty was preceded by the short-lived Qin dynasty (221–206 BC) and a warring int ...
, so the map dates to the early 2nd century BC. The map shows topographic features such as mountains, waterways and roads, and is thought to cover the area of the preceding Qin (state), Qin Kingdom.


Earliest geographical writing

In China, the earliest known geographical Chinese writing dates back to the 5th century BC, during the beginning of the Warring States (481–221 BC). This was the ''Yu Gong'' or ''Tribute of Yu'' chapter of the ''Shu Jing'' or ''Book of Documents''. The book describes the traditional nine provinces, their kinds of soil, their characteristic products and economic goods, their tributary goods, their trades and vocations, their state revenues and agricultural systems, and the various rivers and lakes listed and placed accordingly. The nine provinces in the time of this geographical work were very small in size compared to their modern Chinese counterparts. The Yu Gong's descriptions pertain to areas of the Yellow River, the lower valleys of the Yangtze, Yangzi, with the plain between them and the Shandong Peninsula, and to the west the most northern parts of the Wei River and the Han River (Hanshui), Han River were known (along with the southern parts of modern-day Shanxi).


Earliest known reference to a map (圖 tú)

The oldest reference to a map in China comes from the 3rd century BC. This was the event of 227 BC where Crown Prince Dan of Yan had his assassin Jing Ke visit the court of the ruler of the Qin (state), State of Qin, who would become the first leader to unify China, Qin Shi Huang (r. 221–210 BC). Jing Ke was to present the ruler of Qin with a district map painted on a silk scroll, rolled up and held in a case where he hid his assassin's dagger. Handing to him the map of the designated territory was the first diplomatic act of submitting that district to Qin rule. Jing then tried and failed to kill him. From then on, maps were frequently mentioned in Chinese sources.


Han dynasty

The three Han dynasty maps found at Mawangdui differ from the earlier Qin State maps. While the Qin maps place the cardinal direction of north at the top of the map, the Han maps are orientated with the southern direction at the top. The Han maps are also more complex, since they cover a much larger area, employ a large number of well-designed map symbols, and include additional information on local military sites and the local population. The Han maps also note measured distances between certain places, but a formal Grid reference, graduated scale and rectangular grid system for maps would not be used—or at least described in full—until the 3rd century (see Pei Xiu below). Among the three maps found at Mawangdui was a small map representing the tomb area where it was found, a larger topographical map showing the Han's borders along the subordinate Changsha, Kingdom of Changsha and the Nanyue kingdom (of northern Vietnam and parts of modern Guangdong and Guangxi), and a map which marks the positions of Han military garrisons that were employed in an Southward expansion of the Han dynasty, attack against Nanyue in 181 BC. An early text that mentioned maps was the ''Rites of Zhou''. Although attributed to the era of the Zhou dynasty, its first recorded appearance was in the libraries of Prince Liu De ( BC), and was compiled and commented on by Liu Xin (scholar), Liu Xin in the 1st century AD. It outlined the use of maps that were made for governmental provinces and districts, principalities, frontier boundaries, and even pinpointed locations of ores and minerals for mining facilities. Upon the investiture of three of his sons as feudal princes in 117 BC, Emperor Wu of Han had maps of the entire empire submitted to him. From the 1st century AD onwards, official Chinese historical texts contained a geographical section (地理纪; ''Diliji''), which was often an enormous compilation of changes in place-names and local administrative divisions controlled by the ruling dynasty, descriptions of mountain ranges, river systems, taxable products, etc. From the 5th century BC ''Shu Jing'' forward, Chinese geographical writing provided more concrete information and less legendary element. This example can be seen in the 4th chapter of the ''Huainanzi'' (Book of the Master of Huainan), compiled under the editorship of Prince Liu An in 139 BC during the
Han dynasty The Han dynasty was an Dynasties of China, imperial dynasty of China (202 BC9 AD, 25–220 AD) established by Liu Bang and ruled by the House of Liu. The dynasty was preceded by the short-lived Qin dynasty (221–206 BC ...
(202 BC–202 AD). The chapter gave general descriptions of topography in a systematic fashion, given visual aids by the use of maps (di tu) due to the efforts of Liu An and his associate Zuo Wu. In Chang Chu's ''Hua Yang Guo Chi'' ("Historical Geography of Sichuan") of 347, not only rivers, trade routes, and various tribes were described, but it also wrote of a 'Ba June Tu Jing' ("Map of Sichuan"), which had been made much earlier in 150. Local mapmaking such as the one of Sichuan mentioned above, became a widespread tradition of Chinese geographical works by the 6th century, as noted in the bibliography of the ''Sui Shu''. It is during this time of the Southern and Northern Dynasties that the Liang dynasty (502–557) cartographers also began carving maps into stone steles (alongside the maps already drawn and painted on paper and silk).


Pei Xiu, the 'Ptolemy of China'

In the year 267, Pei Xiu (224–271) was appointed as the Minister of Works by Emperor Wu of Jin, the first emperor of the Jin dynasty (265–420), Jin dynasty. Pei is best known for his work in cartography. Although map making and use of the grid existed in China before him, he was the first to mention a Grid reference, plotted geometrical grid and graduated scale displayed on the surface of maps to gain greater accuracy in the estimated distance between different locations. Pei outlined six principles that should be observed when creating maps, two of which included the rectangular grid and the graduated scale for measuring distance. Western historians compare him to the Greek Ptolemy for his contributions in cartography. However, Howard Nelson states that, although the accounts of earlier cartographic works by the inventor and official Zhang Heng (78–139) are somewhat vague and sketchy, there is ample written evidence that Pei Xiu derived the use of the rectangular grid reference from the maps of Zhang Heng. Later Chinese ideas about the quality of maps made during the Han dynasty and before stem from the assessment given by Pei Xiu. Pei Xiu noted that the extant Han maps at his disposal were of little use since they featured too many inaccuracies and exaggerations in measured distance between locations. However, the Qin State maps and Mawangdui maps of the Han era were far superior in quality than those examined by Pei Xiu. It was not until the 20th century that Pei Xiu's 3rd-century assessment of earlier maps' dismal quality would be overturned and disproven. The Qin and Han maps did have a degree of accuracy in scale and pinpointed location, but the major improvement in Pei Xiu's work and that of his contemporaries was expressing topographical elevation on maps.


Sui dynasty

In the year 605, during the Sui dynasty (581–618), the Commercial Commissioner Pei Ju (547–627) created a famous geometrically gridded map. In 610 Emperor Yang of Sui ordered government officials from throughout the empire to document in gazetteers the customs, products, and geographical features of their local areas and provinces, providing descriptive writing and drawing them all onto separate maps, which would be sent to the imperial secretariat in the capital city.


Tang dynasty

The Tang dynasty (618–907) also had its fair share of cartographers, including the works of Xu Jingzong in 658, Wang Mingyuan in 661, and Wang Zhongsi in 747. Arguably the greatest geographer and cartographer of the Tang period was Jia Dan (730–805), whom Emperor Dezong of Tang entrusted in 785 to complete a map of China with her recently former inland colonies of Central Asia, the massive and detailed work completed in 801, called the ''Hai Nei Hua Yi Tu'' (Map of both Chinese and Barbarian Peoples within the (Four) Seas). The map was and in dimension, mapped out on a grid scale of equaling 100 li (unit) (the Chinese equivalent of the mile/kilometer). Jia Dan is also known for having described the
Persian Gulf The Persian Gulf, sometimes called the Arabian Gulf, is a Mediterranean seas, mediterranean sea in West Asia. The body of water is an extension of the Arabian Sea and the larger Indian Ocean located between Iran and the Arabian Peninsula.Un ...
region with great detail, along with lighthouses that were erected at the mouth of the Persian Gulf by the medieval Iranians in the Abbasid period (refer to article on Tang dynasty for more).


Song dynasty

During the Song dynasty (960–1279) Emperor Taizu of Song ordered Lu Duosun in 971 to update and 're-write all the Tu Jing in the world', which would seem to be a daunting task for one individual, who was sent out throughout the provinces to collect texts and as much data as possible. With the aid of Song Zhun, the massive work was completed in 1010, with some 1566 chapters. The later ''Song Shi'' historical text stated (Wade-Giles spelling): Like the earlier Liang dynasty stone-stele maps (mentioned above), there were large and intricately carved stone stele maps of the Song period. For example, the squared stone stele map of an anonymous artist in 1137, following the grid scale of 100 li squared for each grid square. What is truly remarkable about this map is the incredibly precise detail of coastal outlines and river systems in China (refer to Needham's Volume 3, Plate LXXXI for an image). The map shows 500 settlements and a dozen rivers in China, and extends as far as Korea and India. On the reverse, a copy of a more ancient map uses grid coordinates in a scale of 1:1,500,000 and shows the coastline of China with great accuracy. The famous 11th-century scientist and polymath statesman Shen Kuo (1031–1095) was also a geographer and cartographer. His largest atlas included twenty three maps of China and foreign regions that were drawn at a uniform scale of 1:900,000. Shen also created a three-dimensional space, three-dimensional raised-relief map using sawdust, wood, beeswax, and wheat paste, while representing the topography and specific locations of a frontier region to the imperial court. Shen Kuo's contemporary, Su Song (1020–1101), was a cartographer who created detailed maps to resolve a territorial border dispute between the Song dynasty and the Liao dynasty.


Yuan dynasty (Mongol Empire)

In the Mongol Empire, the Mongol scholars with the Persian and Chinese cartographers or their foreign colleagues created maps, geographical compendium as well as travel accounts. Rashid-al-Din Hamadani described his geographical compendium, "Suvar al-aqalim", constituted volume four of the Collected chronicles of the Ilkhanate in Persia. His works says about the borders of the seven climes (old world), rivers, major cities, places, climate, and yam (route), Mongol yams (relay stations). The Great Khan Khubilai's ambassador and minister, Bolad, had helped Rashid's works in relation to the Mongols and Mongolia. Thanks to Pax Mongolica, the easterners and the westerners in Mongol dominions were able to gain access to one another's geographical materials. The Mongols required the nations they conquered to send geographical maps to the Mongol headquarters. One of medieval Persian work written in northwest Iran can clarify the historical geography of Mongolia where Genghis Khan was born and united the Mongol and Turkic peoples, Turkic nomads as recorded in native sources, especially the Secret History of the Mongols. Map of relay stations, called "yam", and strategic points existed in the Yuan dynasty. The Mongol cartography was enriched by traditions of ancient China and Iran which were now under the Mongols. Because the Yuan court often requested the western Mongol khanates to send their maps, the Yuan dynasty was able to publish a map describing the whole Mongol world in c.1330. This is called "Hsi-pei pi ti-li tu". The map includes the Mongol dominions including 30 cities in Iran such as Ispahan and the Ilkhanid capital Soltaniyeh, and Russia (as "Orash") as well as their neighbors, e.g.
Egypt Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northe ...
and Syria.


Ming dynasty

The multicolour map, Da Ming Hunyi Tu dates to the early Ming dynasty from about 1390, is in multicolour. The horizontal scale is 1:820,000 and the vertical scale is 1:1,060,000. Many of the oldest surviving maps from China dates between the 16th to 17th centuries, these include the ''Sihai Huayi Zongtu'' (1532) and the ''Shanhai Yudi Quantu'' (1609).Ptak, Roderich.
The Sino-European Map (''Shanhai yudi quantu'') in the Encyclopedia ''Sancai Tuhui''
".
Similar to these, the earliest European style map from China, the ''Kunyu Wanguo Quantu'' (1602) influenced and was exported to Japan and Korea.. By this time, Jesuit missionaries contributed to similar maps such as the ''Wanguo Quantu'' (1620s) and the ''Kunyu Quantu'' (1674). While the Selden Map ( century) employs a system of navigational routes emanating from ports in China. The Mao Kun map published in 1628 is thought to be based on a strip map dated to the voyages of Zheng He. In 1579, Luo Hongxian published the ''Guang Yutu'' atlas, including more than 40 maps, a grid system, and a systematic way of representing major landmarks such as mountains, rivers, roads and borders. The ''Guang Yutu'' incorporates the discoveries of the naval explorer Zheng He's 15th-century voyages along the coasts of China, Southeast Asia, India and Africa.


Qing dynasty

From the 16th and 17th centuries, several examples survive of maps focused on cultural information. Gridlines are not used on either Yu Shi's Gujin xingsheng zhi tu (1555) or Zhang Huang's Tushu bian (1613); instead, illustrations and annotations show mythical places, exotic foreign peoples, administrative changes and the deeds of historic and legendary heroes. Also in the 17th century, an edition of a possible Tang dynasty map shows clear topographical contour lines. Although Topography, topographic features were part of maps in China for centuries, a Fujian county official Ye Chunji (1532–1595) was the first to base county maps using on-site topographical
surveying Surveying or land surveying is the technique, profession, art, and science of determining the land, terrestrial Plane (mathematics), two-dimensional or Three-dimensional space#In Euclidean geometry, three-dimensional positions of Point (geom ...
and observations.


Japan and Korea

In 1402, Yi Hoe and Kwan Yun created a world map largely based from Chinese cartographers called the Gangnido map. It is currently one of the oldest surviving world maps from East Asia.Cartography of Korea, pgs. 235–345, Gari Ledyard ''al''., (Department of Geography, University of Wisconsin, Madison), The History of Cartography, Volume Two, Book Two, Cartography in Traditional East and Southeast Asian Societies, 1994, The University of Chicago Press, J. B. Harley and David Woodward ''ed''., (Department of Geography, University of Wisconsin, Milwaukee, WI / Department of Geography, University of Wisconsin, Madison, WI), pgs. slip cover, 243–247, . Another notable pre-modern map is the Cheonhado map developed in Korea in the 17th century. Sekisui Nagakubo produced a world map in 1785 called the ''Comprehensive Map and Description of the Geography of the Myriad Countries of the Globe'' (), mainly deriving it from an earlier map made by Matteo Ricci. The production was made by woodblock print and folded into paper boards, he made corrections and additions on top of Matteo's production. This was one of the earliest maps with longitude and latitude information in Japan and was written in Katakana. Another well-known cartographer of the late-Edo period was Inō Tadataka, Ino Tadataka, he is known for completing the first map of Japan using modern surveying techniques. His most famous work, the consisted of three large map pages at a scale of 1:432,000 and it showed the entire country on eight pages at 1:216,000. Some of his maps are accurate to 1/1000 of a degree, which allowed it to become the definitive maps used in Japan for nearly a century. Maps based on his work were in use as late as 1924.


India


Ancient India

Indian cartographic traditions covered the locations of the Pole star and other constellations of use. These charts may have been in use by the beginning of the Common Era for purposes of navigation. Detailed maps of considerable length describing the locations of settlements, sea shores, rivers, and mountains were also made. The 8th-century scholar ''Bhavabhuti'' conceived paintings which indicated geographical regions. Italian scholar Francesco Lorenzo Pullè reproduced a number of ancient Indian maps in his ''magnum opus'' ''La Cartografia Antica dell'India''. Out of these maps, two have been reproduced using a manuscript of ''Lokaprakasa'', originally compiled by the polymath Ksemendra (Kashmir, 11th century), as a source. The other manuscript, used as a source by Pullè, is titled ''Samgrahani''. The early volumes of the ''Encyclopædia Britannica'' also described cartographic charts made by the Dravidian people of India.


Mughal era

Maps from the Ain-e-Akbari, a Mughal era, Mughal document detailing India's history and traditions, contain references to locations indicated in earlier Indian cartographic traditions. Another map describing the kingdom of Nepal, four feet in length and about two and a half feet in breadth, was presented to Warren Hastings. In this map the mountains were elevated above the surface, and several geographical elements were indicated in different colors. The scholar Sadiq Isfahani of Jaunpur, Uttar Pradesh, Jaunpur compiled an atlas of the parts of the world which he held to be 'suitable for human life'.Schwartzberg, 1302 The 32 sheet atlas—with maps oriented towards the south as was the case with Islamic works of the era—is part of a larger scholarly work compiled by Isfahani during 1647 CE. According to Joseph E. Schwartzberg (2008): 'The largest known Indian map, depicting the former Rajput capital at Kingdom of Amber, Amber in remarkable house-by-house detail, measures 661 × 645 cm.Schwartzberg, 1303 (260 × 254 in., or approximately 22 × 21 ft).'


Islamic cartographic schools


Arab and Persian cartography

In the Middle Ages, Muslim scholars continued and advanced on the mapmaking traditions of earlier cultures. Most used Ptolemy's methods; but they also took advantage of what explorers and merchants learned in their travels across the Muslim world, from Spain to India to Africa, and beyond in trade relationships with China, and Russia. An important influence in the development of cartography was the patronage of the Abbasid caliph, al-Ma'mun, who reigned from 813 to 833. He commissioned several geographers to remeasure the distance on earth that corresponds to one degree of celestial meridian. Thus his patronage resulted in the refinement of the definition of the mile used by Arabs (''mīl'' in Arabic) in comparison to the ''stadion'' used by Greeks. These efforts also enabled Muslims to calculate the circumference of the earth. Al-Mamun also commanded the production of a large map of the world, which has not survived,Edson and Savage-Smith (2004) though it is known that its map projection type was based on
Marinus of Tyre Marinus of Tyre (, ''Marînos ho Týrios'';  70–130) was a List of Graeco-Roman geographers, geographer, Cartography, cartographer and mathematician, who founded mathematical geography and provided the underpinnings of Claudius Ptolemy's i ...
rather than
Ptolemy Claudius Ptolemy (; , ; ; – 160s/170s AD) was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine science, Byzant ...
. Also in the 9th century, the Mathematics in medieval Islam, Persian mathematician and geographer, Habash al-Hasib al-Marwazi, employed spherical trigonometry and map projection methods to convert Polar coordinate system, polar coordinates to a different coordinate system centred on a specific point on the sphere, in this the Qibla, the direction to Mecca. Abū Rayhān Bīrūnī (973–1048) later developed ideas which are seen as an anticipation of the polar coordinate system. Around 1025, he describes a polar equi-azimuthal equidistant projection of the celestial sphere. However, this type of projection had been used in ancient Egyptian star-maps and was not to be fully developed until the 15 and 16th centuries. In the early 10th century, Ahmed ibn Sahl al-Balkhi, Abū Zayd al-Balkhī, originally from Balkh, founded the "Balkhī school" of terrestrial mapping in Baghdad. The geographers of this school also wrote extensively of the peoples, products, and customs of areas in the Muslim world, with little interest in the non-Muslim realms. The "Balkhī school", which included geographers such as Estakhri, al-Muqaddasi and Ibn Hawqal, produced world atlases, each one featuring a world map and twenty regional maps. Suhrāb, a late 10th-century Muslim geographer, accompanied a book of geographical Coordinate system, coordinates with instructions for making a rectangular world map, with
equirectangular projection The equirectangular projection (also called the equidistant cylindrical projection or la carte parallélogrammatique projection), and which includes the special case of the plate carrée projection (also called the geographic projection, lat/l ...
or cylindrical equidistant projection. The earliest surviving rectangular coordinate map is dated to the 13th century and is attributed to Hamdallah al-Mustaqfi al-Najm al-Dīn al-Qazwīnī al-Kātibī, Qazwini, who based it on the work of Suhrāb. The Orthogonality, orthogonal parallel lines were separated by one degree intervals, and the map was limited to Southwest Asia and Central Asia. The earliest surviving world maps based on a rectangular coordinate grid are attributed to al-Mustawfi in the 14th or 15th century (who used invervals of ten degrees for the lines), and to Hafiz-i Abru (died 1430). Ibn Battuta (1304–1368?) wrote "Rihlah" (Travels) based on three decades of journeys, covering more than 120,000 km through northern Africa, southern Europe, and much of Asia.


=Islamic regional cartography

= Islamic regional cartography is usually categorized into three groups: that produced by the "Ahmed ibn Sahl al-Balkhi, Balkhī school", the type devised by Muhammad al-Idrisi, and the type that are uniquely found in the ''Book of curiosities''. The maps by the Balkhī schools were defined by political, not longitudinal boundaries and covered only the Muslim world. In these maps the distances between various "stops" (cities or rivers) were equalized. The only shapes used in designs were verticals, horizontals, 90-degree angles, and arcs of circles; unnecessary geographical details were eliminated. This approach is similar to that used in Rapid transit, subway maps, most notable used in the "London Underground Tube Map" in 1931 by Harry Beck (graphic designer), Harry Beck. Al-Idrīsī defined his maps differently. He considered the extent of the known world to be 160° in longitude, and divided the region into ten parts, each 16° wide. In terms of latitude, he portioned the known world into seven 'climes', determined by the length of the longest day. In his maps, many dominant geographical features can be found.


=''Book on the appearance of the Earth''

= Muhammad ibn Mūsā al-Khwārizmī's ' ("Book on the appearance of the Earth") was completed in 833. It is a revised and completed version of
Ptolemy Claudius Ptolemy (; , ; ; – 160s/170s AD) was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine science, Byzant ...
's ''Geographia (Ptolemy), Geography'', consisting of a list of 2402 coordinates of cities and other geographical features following a general introduction. Al-Khwārizmī, Al-Ma'mun's most famous geographer, corrected Ptolemy's gross overestimate for the length of the Mediterranean Sea (from the Canary Islands to the eastern shores of the Mediterranean); Ptolemy overestimated it at 63 degrees of
longitude Longitude (, ) is a geographic coordinate that specifies the east- west position of a point on the surface of the Earth, or another celestial body. It is an angular measurement, usually expressed in degrees and denoted by the Greek lett ...
, while al-Khwarizmi almost correctly estimated it at nearly 50 degrees of longitude. Al-Ma'mun's geographers "also depicted the Atlantic Ocean, Atlantic and Indian Oceans as Ocean, open bodies of water, not land-locked seas as Ptolemy had done." Al-Khwarizmi thus set the Prime Meridian of the Old World at the eastern shore of the Mediterranean, 10–13 degrees to the east of Alexandria (the prime meridian previously set by Ptolemy) and 70 degrees to the west of Baghdad. Most medieval Muslim geographers continued to use al-Khwarizmi's prime meridian. Other prime meridians used were set by Abū Muhammad al-Hasan al-Hamdānī and Habash al-Hasib al-Marwazi at Ujjain, a centre of Indian astronomy, and by another anonymous writer at Basra.


=Al-Biruni

= Abu Rayhan al-Biruni (973–1048) gave an estimate of 6,339.6 km for the Earth radius, which is only 17.15 km less than the modern value of 6,356.7523142 km (WGS84 polar radius "b"). In contrast to his predecessors who measured the Earth's circumference by sighting the Sun simultaneously from two different locations, Al-Biruni developed a new method of using trigonometric calculations based on the angle between a plain and mountain top which yielded more accurate measurements of the Earth's circumference and made it possible for it to be measured by a single person from a single location. (cf. ) Al-Biruni's method's motivation was to avoid "walking across hot, dusty deserts" and the idea came to him when he was on top of a tall mountain in India (present day Pind Dadan Khan, Pakistan). From the top of the mountain, he sighted the Magnetic dip, dip angle which, along with the mountain's height (which he calculated beforehand), he applied to the law of sines formula. This was the earliest known use of dip angle and the earliest practical use of the law of sines.
Around 1025, Al-Biruni was the first to describe a polar equi-azimuthal equidistant projection of the celestial sphere. In his ''Codex Masudicus'' (1037), Al-Biruni theorized the existence of a landmass along the vast ocean between Asia and Europe, or what is today known as the Americas. He deduced its existence on the basis of his accurate estimations of the
Earth's circumference Earth's circumference is the distance around Earth. Measured around the equator, it is . Measured passing through the poles, the circumference is . Treating the Earth as a sphere, its circumference would be its single most important measuremen ...
and Afro-Eurasia's size, which he found spanned only two-fifths of the Earth's circumference, and his discovery of the concept of specific gravity, from which he deduced that the geological processes that gave rise to
Eurasia Eurasia ( , ) is a continental area on Earth, comprising all of Europe and Asia. According to some geographers, Physical geography, physiographically, Eurasia is a single supercontinent. The concept of Europe and Asia as distinct continents d ...
must've also given rise to lands in the vast ocean between Asia and Europe. He also theorized that the landmass must be inhabited by human beings, which he deduced from his knowledge of humans inhabiting the broad north–south band stretching from Russia to South India and Sub-Saharan Africa, theorizing that the landmass would most likely lie along the same band. He was the first to predict "the existence of land to the east and west of Eurasia, which later on was discovered to be America and Japan".


=''Tabula Rogeriana''

= The Geography in medieval Islam, Arab geographer, Muhammad al-Idrisi, produced his medieval atlas, ''Tabula Rogeriana'' or ''The Recreation for Him Who Wishes to Travel Through the Countries'', in 1154. He incorporated the knowledge of Africa, the Indian Ocean and the Far East gathered by Islamic economics in the world, Arab merchants and explorers with the information inherited from the classical geographers to create the most accurate map of the world in pre-modern times. With funding from Roger II of Sicily (1097–1154), al-Idrisi drew on the knowledge collected at the university of Córdoba, Spain, Cordoba and paid draftsmen to make journeys and map their routes. The book describes the earth as a sphere with a circumference of but maps it in 70 rectangular sections. Notable features include the correct dual sources of the Nile, the coast of Ghana and mentions of Norway. Climate zones were a chief organizational principle. A second and shortened copy from 1192 called ''Garden of Joys'' is known by scholars as the ''Little Idrisi''. On the work of al-Idrisi, S. P. Scott commented: Al-Idrisi's atlas, originally called the ''Nuzhat'' in Arabic, served as a major tool for Italian, Dutch and French mapmakers from the 16th century to the 18th century.


Piri Reis map of the Ottoman Empire

The Ottoman cartographer Piri Reis published navigational maps in his ''Kitab-ı Bahriye''. The work includes an atlas of charts for small segments of the mediterranean, accompanied by sailing instructions covering the sea. In the second version of the work, he included a map of the Americas. The Piri Reis map drawn by the Ottoman cartographer Piri Reis in 1513, is one of the oldest surviving maps to show the Americas.


Medieval Europe


Medieval maps and the Mappa Mundi

Medieval maps of the world in Europe were mainly symbolic in form along the lines of the much earlier
Babylonian World Map Babylonian may refer to: * Babylon, a Semitic Akkadian city/state of ancient Mesopotamia founded in 1894 BC * Babylonia, an ancient Akkadian-speaking Semitic nation-state and cultural region based in central-southern Mesopotamia (present-day Iraq) ...
. Known as Mappa Mundi (cloths or charts of the world) these maps were circular or symmetrical cosmological diagrams representing the Earth's single land mass as disk-shaped and surrounded by ocean.


Italian cartography and the birth of portolan charts

Roger Bacon's investigations of map projections and the appearance of portolano and then portolan charts for plying the European trade routes were rare innovations of the period. The Majorcan school is contrasted with the contemporary Italian cartography school. The ''Carta Pisana'' portolan chart, made at the end of the 13th century (1275–1300), is the oldest surviving nautical chart (that is, not simply a map but a document showing accurate navigational directions).


Majorcan cartographic school and the "normal" portolan chart

The Majorcan cartographic school was a predominantly Jewish cooperation of cartographers, cosmographers and navigational instrument-makers in late 13th to the 14th and 15th-century Majorca. With their multicultural heritage the Majorcan cartographic school experimented and developed unique cartographic techniques most dealing with the Mediterranean, as it can be seen in the Catalan Atlas. The Majorcan school was (co-)responsible for the invention (c.1300) of the "Normal Portolan chart". It was a contemporary superior, detailed nautical model chart, gridded by compass lines.


Polynesian stick charts

The Polynesian peoples who explored and settled the Pacific islands in the first two millennia AD used maps to navigate across large distances. A surviving map from the Marshall Islands uses sticks tied in a grid with palm strips representing wave and wind patterns, with shells attached to show the location of islands. Other maps were created as needed using temporary arrangements of stones or shells.


Modern era


Iberian cartography in the Age of Exploration

In the Renaissance, with the renewed interest in classical works, maps became more like surveys once again, while European exploration of the Americas and their subsequent effort to control and divide those lands revived interest in scientific mapping methods. Peter Whitfield, the author of several books on the history of maps, credits European mapmaking as a factor in the global spread of western power: "Men in Seville, Amsterdam or London had access to knowledge of America, Brazil, or India, while the native peoples knew only their own immediate environment" (Whitfield). Jordan Branch and his advisor, Steven Weber (professor), Steven Weber, propose that the power of large kingdoms and nation states of later history are an inadvertent byproduct of 15th-century advances in map-making technologies. During the 15th and 16th centuries, Iberian powers (Spain in the Age of Discovery, Kingdom of Castile and Portugal in the Age of Discovery, Kingdom of Portugal) were at the vanguard of European overseas exploration and mapping the coasts of the Americas, Africa, and Asia, in what came known as the Age of Discovery (also known as the Age of Exploration). Spain and Portugal were magnets for the talent, science and technology from the Italian city-states. Portuguese discoveries, Portugal's methodical expeditions started in 1419 along West Africa's coast under the sponsorship of Prince Henry the Navigator, with Bartolomeu Dias reaching the Cape of Good Hope and entering the Indian Ocean in 1488. Ten years later, in 1498, Vasco da Gama led the first fleet around Africa to India, arriving in Calicut and starting a maritime route from Portugal to India. Soon, after Pedro Álvares Cabral reaching Brazil (1500), explorations proceed to Southeast Asia, having sent the first direct European maritime trade and diplomatic missions to Ming China and to Japan (1542). In 1492, when a Spanish expedition headed by Republic of Genoa, Genoese explorer
Christopher Columbus Christopher Columbus (; between 25 August and 31 October 1451 – 20 May 1506) was an Italians, Italian explorer and navigator from the Republic of Genoa who completed Voyages of Christopher Columbus, four Spanish-based voyages across the At ...
sailed west to find a new trade route to the Far East but inadvertently found the Americas. Columbus's first two voyages (1492–93) reached the Bahamas and various Caribbean islands, including Hispaniola, Puerto Rico and Cuba. The Spanish cartographer and explorer Juan de la Cosa sailed with Columbus. He created the first known cartographic representations showing both the Americas. The post-1492 era is known as the period of the Columbian Exchange, a dramatically widespread exchange of animals, plants, culture, human populations (including slaves), communicable disease, and ideas between the American and Afro-Eurasian hemispheres following the Voyages of Christopher Columbus to the Americas. The Timeline of Magellan's circumnavigation, Magellan-Elcano circumnavigation was the first known voyage around the world in human history. It was a Spanish expedition that sailed from Seville in 1519 under the command of Portuguese navigator Ferdinand Magellan in search of a maritime path from the Americas to the East Asia across the Pacific Ocean. Following Magellan's death in Mactan (Philippines) in 1521, Juan Sebastián Elcano took command of the expedition, sailing to Borneo, the Spice Islands and back to Spain across the Indian Ocean, round the Cape of Good Hope and north along the west coast of Africa. They arrived in Spain three years after they left, in 1522. * : Portuguese cartographer Pedro Reinel made the oldest known signed Portuguese nautical chart. * 1492: Cartographer Jorge de Aguiar made the oldest known signed and dated Portuguese nautical chart. * 1537: Much of Portuguese mathematician and cosmographer Pedro Nunes' work related to navigation. He was the first to understand why a ship maintaining a steady course (navigation), course would not travel along a great circle, the shortest path between two points on Earth, but would instead follow a spiral course, called a loxodrome. These lines, also called rhumb lines, maintain a fixed angle with the meridians. In other words, loxodromic curves are directly related to the construction of the Nunes Affine connection, connection, also called navigator connection. In his ''Treatise in Defense of the Marine Chart '' (1537), Nunes argued that a nautical chart should have its parallels and meridians shown as straight lines. Yet he was unsure how to solve the problems that this caused, a situation that lasted until Gerardus Mercator, Mercator developed the
projection Projection or projections may refer to: Physics * Projection (physics), the action/process of light, heat, or sound reflecting from a surface to another in a different direction * The display of images by a projector Optics, graphics, and carto ...
bearing his name. The Mercator Projection is the system which is still used.


First maps of the Americas

* 1500: The Spanish cartographer and explorer Juan de la Cosa created the first known cartographic representations showing both the Americas as well as Africa and Eurasia. * 1502: Unknown Portuguese cartographer made the Cantino planisphere, the first nautical chart to implicitly represent latitudes. * 1504: Portuguese cartographer Pedro Reinel made the oldest known nautical chart with a scale of latitudes. * 1519 : Portuguese cartographers Lopo Homem, Pedro Reinel and Jorge Reinel made the group of maps known today as the Miller Atlas or Lopo Homem – Reinéis Atlas. * 1530: Alonzo de Santa Cruz, Spanish cartographer, produced the first map of magnetic variations from true north. He believed it would be of use in finding the correct longitude. Santa Cruz also designed new nautical instruments, and was interested in navigational methods.


Padrón Real of the Spanish Empire

Founded 1504 in Seville, the Spanish Casa de Contratación, House of Trade () kept a large contingent of cartographers as Spain's overseas empire expanded. A Padrón Real, royal standard map () was established in 1508 and updated periodically as more information became available from major expeditions returning to Seville. This continued a practice of long standing in Portugal, whose was kept in the Casa da Guiné, Guinea and Casa da Índia, India Houses ( and ) within the royal palace in Lisbon. The originals of the Spanish and Portuguese maps are now lost but copies of known provenance are held by the Vatican Library; the Biblioteca Estense in Modena, Italy; and the Anna Amalia Bibliothek in Weimar, Germany. The 1527 and 1529 copies of the Padrón Real under Diogo Ribeiro (cartographer), Diogo Ribeiro, a Portuguese cartographer working for Spain, are particularly praised as the first scientific world map. Incorporating information from the Magellan expedition, Magellan, Esteban Gómez, Gómez, and Loaysa expeditions and the geodesy, geodesic research undertaken to codify the demarcation lines established by the Treaty of Tordesillas, treaties of Tordesillas and Treaty of Zaragoza, Zaragoza, these editions of the Padrón Real show for the first time the full extension of the Pacific Ocean and the continuous coast of North America. They also very precisely delineate the coasts of Central America, Central and South America, although Portugal's control of the African trade routes left the Indian Ocean less exact. Two prominent cosmographers (as mapmakers were then known) of the House of Trade were Alonso de Santa Cruz and Juan López de Velasco, who directed mapmaking under Philip II of Spain, Philip II without ever going to the New World. Their maps were based on information they received from returning navigators. Using repeatable principles that underpin mapmaking, their mapmaking techniques could be employed anywhere. Philip II sought extensive information about his overseas empire, both in written textual form and in the production of maps.


German cartography

* 15th century: The German monk Nicolaus Germanus wrote a pioneering Cosmographia. He added the first new maps to Ptolemy's ''Geographica''. Germanus invented the Donis map projection where parallels of latitude are made equidistant, but meridians converge toward the poles. * 1492: German merchant Martin Behaim (1459–1507) made the Erdapfel, oldest surviving terrestrial globe, but it lacked the Americas. * 1507: German cartographer Martin Waldseemüller's world map (Waldseemüller map) was the first to use the term America for the Western continents (after explorer Amerigo Vespucci). * 1603: German Johann Bayer's star atlas (Uranometria) was published in Augsburg in 1603 and was the first atlas to cover the entire celestial sphere.


Dutch and Flemish cartography

Leuven, Antwerp, and Amsterdam were the main centres of the Netherlandish school of cartography in its golden age (the 16th and 17th centuries, approximately 1570–1670s). The Golden Age of Dutch cartography started in Flanders (mainly in Leuven and Antwerp) when Gerardus Mercator and Abraham Ortelius found its fullest expression during the 17th century with the production of monumental multi-volume world atlases in the Dutch Republic (mainly in Amsterdam) by competing mapmaking firms led by Lucas Waghenaer, Joan Blaeu, Jan Janssonius, Claes Janszoon Visscher, and Frederik de Wit. Notable representatives of the Netherlandish, Netherlandish school of cartography and geography (1500s–1600s) include: Franciscus Monachus, Gemma Frisius, Gaspard van der Heyden, Christophe Plantin, Lucas Janszoon Waghenaer, Lucas Waghenaer, Jacob van Deventer (cartographer), Jacob van Deventer, Willebrord Snellius, Willebrord Snell, Hessel Gerritsz, Petrus Plancius, Jodocus Hondius, Henricus Hondius II, Hendrik Hondius I, Willem Blaeu, Joan Blaeu, Andreas Cellarius, Gerard de Jode, Cornelis de Jode, Nicolaes Visscher I and Nicolaes Visscher II. Gerardus Mercator, the Flemish cartographer and geographer with a vast output of wall maps, bound maps, globes and scientific instruments but his greatest legacy was the Mercator projection, mathematical projection he devised for his Mercator 1569 world map, 1569 world map. The Mercator projection is an example of a cylindrical projection in which the meridian (geography), meridians are straight and perpendicular to the parallels. As a result, the map has a constant width and the parallels are stretched east–west as the poles are approached. Mercator's insight was to stretch the separation of the parallels in a way which exactly compensates for their increasing length, thus preserving shapes of small regions, albeit at the expense of global distortion. Such a conformal map, conformal map projection necessarily transforms rhumb lines, sailing courses of a constant bearing, into straight lines on the map thus greatly facilitating navigation. That this was Mercator's intention is clear from the title: ''Nova et Aucta Orbis Terrae Descriptio ad Usum Navigantium Emendate Accommodata'' which translates as "New and more complete representation of the terrestrial globe properly adapted for use in navigation". Although the projection's adoption was slow, by the end of the seventeenth century it was in use for naval charts. Mercator spent the last thirty years of his life working on a vast project, the ''Cosmographia''; a description of the whole universe including the creation and a description of the topography, history and institutions of all countries. The word ''atlas'' makes its first appearance in the title of the final volume: "Atlas sive cosmographicae meditationes de fabrica mundi et fabricati figura". This translates as ''Atlas OR cosmographical meditations upon the creation of the universe, and the universe as created,'' thus providing Mercator's definition of the term ''atlas''. These volumes devote slightly less than one half of their pages to maps: Mercator did not use the term solely to describe a bound collection of maps. His choice of title was motivated by his respect for Atlas (mythology), Atlas "King of Mauretania" Abraham Ortelius is generally recognized as the creator of the first modern atlas, the ''Theatrum Orbis Terrarum''. Triangulation had first emerged as a map making method in the early 16th century when Gemma Frisius set out the idea in his ''Libellus de locorum describendorum ratione'' (''Booklet concerning a way of describing places''). The Dutch cartographer Jacob van Deventer (cartographer), Jacob van Deventer was among the first to make systematic use of triangulation, the technique whose theory was described by Frisius in his 1533 book. The modern systematic use of triangulation networks stems from the work of the Dutch mathematician Willebrord Snellius, Willebrord Snell (born Willebrord Snel van Royen), who in 1615 surveyed the distance from Alkmaar to Bergen op Zoom, approximately , using a chain of quadrangles containing 33 triangles in all. The two towns were separated by one degree on the Meridian (geography), meridian, so from his measurement he was able to calculate a value for the circumference of the earth – a feat celebrated in the title of his book ''Eratosthenes Batavus'' (''The Dutch
Eratosthenes Eratosthenes of Cyrene (; ;  – ) was an Ancient Greek polymath: a Greek mathematics, mathematician, geographer, poet, astronomer, and music theory, music theorist. He was a man of learning, becoming the chief librarian at the Library of A ...
''), published in 1617. Snell's methods were taken up by Jean Picard who in 1669–1670 surveyed one degree of latitude along the Paris Meridian using a chain of thirteen triangles stretching north from Paris to the clocktower of Sourdon, near Amiens. The first printed atlas of nautical charts (''De Spieghel der Zeevaerdt'' or ''The Mirror of Navigation'' / ''The Mariner's Mirror'') was produced by Lucas Waghenaer in Leiden in 1584. This atlas was the first attempt to systematically codify nautical maps. This chart-book combined an atlas of nautical charts and sailing directions with instructions for navigation on the western and north-western coastal waters of Europe. It was the first of its kind in the history of maritime cartography. In 1660, the German-born Dutch cartographer Andreas Cellarius had his star atlas (''Harmonia Macrocosmica'') published by Jan Janssonius in Amsterdam. In the long run the competition between map-making firms Blaeu and Janssonius resulted in the publication of an ''Atlas Maior'' or 'Major Atlas'. In 1662 the Latin edition of Joan Blaeu's ''Atlas Maior'' appeared in eleven volumes and with approximately 600 maps. In the years to come French and Dutch editions followed in twelve and nine volumes respectively. Purely judging from the number of maps in the ''Atlas Maior'', Blaeu had outdone his rival Jan Janssonius. And also from a commercial point of view it was a huge success. Also due to the superior typography the ''Atlas Maior'' by Blaeu soon became a status symbol for rich citizens. Costing 350 guilders for a non-coloured and 450 guilders for a coloured version, the atlas was the most precious book of the 17th century. However, the ''Atlas Maior'' was also a turning point: after that time the role of Dutch cartography (and Netherlandish cartography in general) was finished. Janssonius died in 1664 while a great fire in 1672 destroyed one of Blaeu's print shops. In that fire a part of the copperplates went up in flames. Fairly soon afterwards Joan Blaeu died, in 1673. The almost 2,000 copperplates of Janssonius and Blaeu found their way to other publishers.


French cartography

Historian David Buisseret has traced the roots of the flourishing of cartography in the 16th and 17th centuries in Europe. He noted five distinct reasons: 1) admiration of ancient history, antiquity, especially the rediscovery of
Ptolemy Claudius Ptolemy (; , ; ; – 160s/170s AD) was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine science, Byzant ...
, considered to be the first geographer; 2) increasing reliance on measurement and quantification as a result of the scientific revolution; 3) refinements in the visual arts, such as the discovery of Perspective (graphical), perspective, that allowed for better representation of spatial entities; 4) development of estate property; and 5) the importance of mapping to nation-building. The reign of Louis XIV is generally considered to represent the beginning of cartography as a science in France.Pelletier, Monique. “Cartography and Power in Europe During the Seventeenth and Eighteenth Centuries,” ''Cartographica'' 35 (1998). The evolution of cartography during the transition between the 17th and 18th centuries involved advancements on a technical level, as well as those on a representative level. According to Marco Petrella, the map developed "from a tool used to affirm the administrative borders of the reign and its features…into a tool which was necessary to intervene in territory and thus establish control of it."Petrella, Marco. "Guillaume Delisle's Carte du Duche de Bourgogne: The Role of Central and Peripheral Authorities in the Construction of a Provincial Territory in France in the Early 18th Century,” ''Journal of Map & Geography Libraries'' 5 (2008): 17–39. Because unification of the kingdom necessitated well-kept records of land and tax bases, Louis XIV and members of the royal court pushed the development and progression of the sciences, especially cartography. Louis XIV established the ''Académie des Sciences'' in 1666, with the expressed purpose of improving cartography and sailing charts. It was found that all the gaps of knowledge in geography and navigation could be accounted for in the further exploration and study of astronomy and geodesy.Turnbull, David. "Cartography and Science in Early Modern Europe: Mapping the Construction of Knowledge Spaces,” ''Imago Mundi'' 48 (1996): 5–24. Colbert also attracted many foreign scientists to the ''Académie des Sciences'' to support the pursuit of scientific knowledge. Under the auspices of the Sun King and Jean-Baptiste Colbert, members of the ''Académie des Sciences'' made many breakthrough discoveries within the realm of cartography to ensure accuracy of their works. Among the more prominent work done with the ''Académie'' was that done by Giovanni Domenico Cassini, who perfected a method of determining longitude by the observation of movement of Jupiter (planet), Jupiter's satellites. Cassini, along with the aid and support of mathematician Jean Picard, developed a system of uniting the provincial topographical information into a comprehensive map of the country, through a network of surveyed triangles. It established a practice that was eventually adopted by all nations in their project to map the areas under their domain. For their method of triangulation, Picard and Cassini used the meridian arc of Paris-Amiens as their starting point. Jean-Baptiste Colbert, the secretary of home affairs and prominent member of Louis XIV's royal court, set out to develop the resource base of the nation and to develop a system of infrastructure that could restore the French economy. He wanted to generate income for the high expenses incurred by Louis XIV. What Colbert lacked in his pursuit of the development of the economy was a map of the entire country. France, like all other countries of Europe, operated on local knowledge. Within France, there were local systems of measuring weight and taxes; a uniform notion of land surveying did not exist. The advancements made by the members of the ''Académie des Sciences'' proved instrumental as a tool to aid reform within the nation. Cartography was an important element in two major reforms undertaken by Colbert: the reform of the royal forest, a project undertaken beginning in 1661, and naval reform, initiated in 1664. In 1663–1664 Colbert tried to collect information from the provinces to accurately assess the income within the kingdom, necessary information for economic and tax reform. Colbert asked the provincial representatives of the king, the intendants, to gather existing maps of territory within the provinces and check them for accuracy. If they were found not to be accurate, the Royal Geographer, Nicolas Sanson, was to edit them, basing his information on the reports prepared by the intendants. The operation did not succeed because the ''Académie des Sciences'' did not believe it had a strong enough basis in cartographic methodology. The importance of cartography to the mechanisms of the state, however, continued to grow. In the 1670s the astronomer Giovanni Domenico Cassini began work on the first modern topographic map in France. It was completed in 1789 or 1793 by his grandson Cassini de Thury.


Paris as the center of cartography

The seventeenth century marked the emergence of France as the center of the map trade in Europe, with much of the production and distribution of maps taking place in the capital Paris.Pedley, Mary Sponberg. "The Map Trade in Paris, 1650–1825," ''Imago Mundi'' 33 (1981). In conjunction with the support of scientific development, the royal court encouraged the work of arts and artisans. This royal patronage attracted artists to Paris. As a result, many mapmakers, such as Nicolas Sanson and Alexis-Hubert Jaillot, moved to the national capital from the peripheries of the provinces. Many of the agents of cartography, including those involved in the creation, production and distribution of maps in Paris, came to live in the same section of the capital city. Booksellers congregated on rue St-Jacques along the left bank of the Seine, while engravers and cartographers lived along the quai de l'Horloge on the (See Figure 1). Regulations enacted by the informed the location of the libraries. These regulations included that each bookseller-printer was to have one shop, which had to be located in the university quarter or on the ''quai de l'Horloge''. These restrictions enabled authorities to more easily inspect their businesses to enforce other regulations such as: printer need to register the number of presses they owned, and any books printed had to be registered and approved by the royal court before sales. Opticians were also located ton he . Their tools – squares, rules, compasses and dividers – were essential to the practice of cartography. Many of the cartographers who worked in Paris never set foot outside the city; they did not gather firsthand knowledge for their maps. They were known as the . An example of a cartographer who relied on other sources was Jean-Baptiste Bourgignon d'Anville, who compiled his information from ancient and modern sources, verbal and pictorial, published and even unpublished sources.


Dieppe school of cartographers

The Dieppe maps are a series of world maps produced in Dieppe, Seine-Maritime, Dieppe, France, in the mid 16th century. They are large hand-produced maps, commissioned for wealthy and royal patrons, including Henry II of France and Henry VIII of England. The Dieppe school of cartography, cartographers included Pierre Desceliers, Johne Rotz, Guillaume Le Testu, Guillaume Brouscon and Nicolas Desliens.


18th-century developments

The Vertical Perspective projection was first used by the German map publisher Matthias Seutter in 1740. He placed his observer at ~12,750 km distance. This is the type of projection used today by Google Earth. The changes in the use of military maps was also part of the modern Military Revolution, which changed the need for information as the scale of conflict increases as well. This created a need for maps to help with "... consistency, regularity and uniformity in military conflict." The final form of the equidistant conic projection was constructed by the French astronomer Joseph-Nicolas Delisle in 1745. The Swiss mathematician Johann Lambert invented several hemispheric map projections. In 1772 he created the Lambert conformal conic projection, Lambert conformal conic and Lambert azimuthal equal-area projections. The Albers equal-area conic projection features no distortion along standard parallels. It was invented by Heinrich Albers in 1805. In 1715 Herman Moll published the Beaver Map, one of the most famous early maps of North America, which he copied from a 1698 work by Nicolas de Fer. In 1763–1767 Captain James Cook mapped Newfoundland (island), Newfoundland. In 1777 Colonel Joseph Frederick Wallet DesBarres created a monumental four-volume atlas of North America, ''Atlantic Neptune''. In the United States in the 18th and 19th centuries, explorers mapped trails and United States Army Corps of Engineers, army engineers surveyed government lands. Two agencies were established to provide more detailed, large-scale mapping: the United States Geological Survey, U.S. Geological Survey and United States Coast and Geodetic Survey, U.S. Coast and Geodetic Survey (now the National Geodetic Survey, a part of the National Oceanic and Atmospheric Administration).


19th-century developments

During his travels in Spanish America (1799–1804) Alexander von Humboldt created the most accurate map of New Spain (now Mexico) to date. Published as part of his ''Essai politique sur le royaume de la Nouvelle-Espagne'' (1811) (''Political Essay on the Kingdom of New Spain''), Humboldt's ''Carte du Mexique'' (1804) was based on existing maps of Mexico, but with Humboldt's careful attention to latitude and longitude. Landing at the Pacific coast port of Acapulco in 1803, Humboldt did not leave the port area for Mexico City until he produced a map of the port; when leaving he drew a map of the east coast port of Veracruz, as well as a map of the central plateau of Mexico. Given royal authorization from the Spanish crown for his trip, crown officials in Mexico were eager to aid Humboldt's research. He had access to José Antonio de Alzate y Ramírez's ''Mapa del Arzobispado de México'' (1768), which he deemed "very bad", as well as the seventeenth-century map of greater Mexico City by savant Don Carlos de Sigüenza y Góngora. John Disturnell, a businessman and publisher of guidebooks and maps, published ''Mapa de los Estados Unidos de Méjico'', which was used in the negotiations between the U.S. and Mexico in the Treaty of Guadalupe Hidalgo (1848), following the Mexican–American War, based on the 1822 map by U.S. cartographer Henry Schenck Tanner. This map has been described as showing U.S. Manifest Destiny; a copy of the map was offered for sale in 2016 for $65,000. Map making at that time was important for both Mexico and the United States. The Prime meridian (Greenwich), Greenwich prime meridian became the international standard reference for cartographers in 1884.


20th-century developments

During the 20th century, maps became more abundant due to improvements in printing and photography that made production cheaper and easier. Airplanes made it possible to photograph large areas at a time. Two-point equidistant projection was first drawn up by Hans Maurer in 1919. In this projection the distance from any point on the map to either of the two regulating points is accurate. The loximuthal projection was constructed by Karl Siemon in 1935 and refined by Waldo Tobler in 1966. Since the mid-1990s, the use of computers in map making has helped to store, sort, and arrange data for mapping to create map projections.


Contemporary developments


Software development

Nowadays map-making heavily relies on computer software to develop and provide a variety of services, a trend that already started at the end of the previous century. For instance, self-location, browser search of places, business, products, and area, and distance calculation. At the present time, computer-based software is dominated by big companies that offer their services to a worldwide public, such as Google Maps, Apple Maps, Bing Maps, National Geographic Maps, Environmental Systems Research Institute, ESRI Geographic information system, Geographic Information System (GIS), CartoDB, Mapbox, Waze, etc. Many other state-based, regional and smaller initiatives, and companies offer their services. The list of online map services is quite long and is growing every day.


Historical map collections

Recent development also include the integration of ancient maps and modern scholar research combined with modern computer software to elaborate periodical history maps. Initiatives such as Euratlas, Euratlas History Maps (which covers the whole of Europe from the year 1 AD to the present), Centennia Historical Atlas (which covers Europe from the year 1000AD to the present), Geacron, and many others who work in what is called historical cartography. These maps include evolution of countries, provinces and cities, wars and battles, the History of borders, history of border changes, etc. Today historical cartography is thriving. The specialization of map services is ever growing. New map projections are still being developed, university map collections, such as Perry–Castañeda Library Map Collection at the University of Texas at Austin, University of Texas, offer better and more diverse maps and map tools every day, making available for their students and the broad public ancient maps that in the past were difficult to find. David Rumsey Historical Map Collection is nowadays a worldwide known initiative.


Self-publishing tools and collaborative mapping

Never in the past there were many "edit-yourself" map tools and software available for non-specialist. Map blogs and self-publishing are common. In 2004, Steve Coast created OpenStreetMap, a virtual community, collaborative project to create a free content, free editable map of the world. The creation and growth of OpenStreetMap has been motivated by restrictions on use or availability of map information across much of the world, and the advent of inexpensive portable satellite navigation devices.


Organizations

In 1921, the International Hydrographic Organization (IHO) was set up, and it constitutes the authority on Hydrography, hydrographic surveying and nautical charting. The current defining document is the Special publication S-23, ''Limits of Oceans and Seas'', 3rd edition, 1953. The second edition dated back to 1937, and the first to 1928. A fourth edition draft was published in 1986 but so far several naming disputes (such as the one over the Sea of Japan naming dispute, Sea of Japan) have prevented its ratification.


History of cartography's technological changes

In cartography, technology has continually changed to meet the demands of new generations of mapmakers and map users. The first maps were manually constructed with brushes and parchment and therefore varied in quality and were limited in distribution. The advent of the compass, printing press, telescope, sextant, Quadrant (instrument), quadrant and Vernier scale, vernier allowed for the creation of far more accurate maps and the ability to make accurate reproductions. Steven Weber (professor), Professor Steven Weber of the University of California, Berkeley, has advanced the hypothesis that the concept of the "nation state" is an inadvertent byproduct of 15th-century advances in map-making technologies. Advances in photochemical technology, such as the lithography, lithographic and photography, photochemical processes, have allowed for the creation of maps that have fine details, do not distort in shape and resist moisture and wear. This also eliminated the need for engraving which further shortened the time it takes to make and reproduce maps. In the mid-to-late 20th century, advances in electronic technology have led to further revolution in cartography. Specifically computer hardware devices such as computer screens, plotters, printers, scanners (remote and document) and analytic stereo plotters along with visualization, image processing, spatial analysis and database software, have democratized and greatly expanded the making of maps, particularly with their ability to produce maps that show slightly different features, without engraving a new printing plate. See also digital raster graphic and Web mapping#History, History of web mapping. Aerial photography and
satellite imagery Satellite images (also Earth observation imagery, spaceborne photography, or simply satellite photo) are images of Earth collected by imaging satellites operated by governments and businesses around the world. Satellite imaging companies sell im ...
have provided high-accuracy, high-throughput methods for mapping physical features over large areas, such as coastlines, roads, buildings, and topography.


See also

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Related histories

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Notes


Citations


References

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External links


''Imago Mundi''
journal of History of Cartography

journal published by the University of Chicago Press
Euratlas Historical Maps
History maps from year zero AD
The History of Cartography Project
at the University of Wisconsin, a comprehensive research project in the history of maps and mapping
Three volumes of ''The History of Cartography''
are available free in PDF format

at the School of Mathematics and Statistics, University of St. Andrews, Scotland

– a learning resource from the British Library
Modern Medieval Map Myths: The Flat World, Ancient Sea-Kings, and Dragons


, Newberry Library
Newberry Library Cartographic Catalog : map catalog and bibliography of the history of cartography

American Geographical Society Library Digital Map Collection

David Rumsey Historical map collection
licensed under a Creative Commons License See Maps#External links, Maps for more links to historical maps; however, most of the largest sites are listed at the sites linked below.
Eratosthenes Map of the Earth, and Measuring of its Circumference
at Convergence
Ancient World Maps


describing holdings of manuscripts, archives, rare books, historical photographs, and other primary sources for the research scholar
Historical Atlas in Persuasive Cartography, The PJ Mode Collection
Cornell University Library
Old Maps Online
{{DEFAULTSORT:History Of Cartography History of cartography, History of science by discipline, cartography sv:Kartografins historia