Mainland Southeast Asia (historically known as Indochina and the Indochinese Peninsula) is the continental portion of

Southeast Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...

. It lies east of the

Indian subcontinent The Indian subcontinent is a physiographic region of Asia below the Himalayas which projects into the Indian Ocean between the Bay of Bengal to the east and the Arabian Sea to the west. It is now divided between Bangladesh, India, and Pakista ...

and south of

Mainland China "Mainland China", also referred to as "the Chinese mainland", is a Geopolitics, geopolitical term defined as the territory under direct administration of the People's Republic of China (PRC) in the aftermath of the Chinese Civil War. In addit ...

and is bordered by the

Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or approximately 20% of the water area of Earth#Surface, Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia (continent), ...

to the west and the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is ...

to the east. It includes the countries of

Cambodia Cambodia, officially the Kingdom of Cambodia, is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. It is bordered by Thailand to the northwest, Laos to the north, and Vietnam to the east, and has a coastline ...

Laos Laos, officially the Lao People's Democratic Republic (LPDR), is the only landlocked country in Southeast Asia. It is bordered by Myanmar and China to the northwest, Vietnam to the east, Cambodia to the southeast, and Thailand to the west and ...

Myanmar Myanmar, officially the Republic of the Union of Myanmar; and also referred to as Burma (the official English name until 1989), is a country in northwest Southeast Asia. It is the largest country by area in Mainland Southeast Asia and has ...

Singapore Singapore, officially the Republic of Singapore, is an island country and city-state in Southeast Asia. The country's territory comprises one main island, 63 satellite islands and islets, and one outlying islet. It is about one degree ...

Thailand Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...

and

Vietnam Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about and a population of over 100 million, making it the world's List of countries and depende ...

as well as

Peninsular Malaysia Peninsular Malaysia, historically known as Malaya and also known as West Malaysia or the Malaysian Peninsula, is the western part of Malaysia that comprises the southern part of the Malay Peninsula on Mainland Southeast Asia and the list of isla ...

. The term ''Indochina'' (originally ''Indo-China'') was coined in the early nineteenth century, emphasizing the historical cultural influence of

Indian Indian or Indians may refer to: Associated with India * of or related to India ** Indian people ** Indian diaspora ** Languages of India ** Indian English, a dialect of the English language ** Indian cuisine Associated with indigenous peoples o ...

and Chinese civilizations on the region. The term was later adopted as the name of the colony of

French Indochina French Indochina (previously spelled as French Indo-China), officially known as the Indochinese Union and after 1941 as the Indochinese Federation, was a group of French dependent territories in Southeast Asia from 1887 to 1954. It was initial ...

(present-day Cambodia, Laos, and Vietnam). Today, the term "Mainland Southeast Asia" is more commonly used, in contrast to

Maritime Southeast Asia Maritime Southeast Asia comprises the Southeast Asian countries of Brunei, Indonesia, Malaysia, the Philippines, Singapore, and East Timor. The terms Island Southeast Asia and Insular Southeast Asia are sometimes given the same meaning as ...

for the island groups off the coast of the

peninsula A peninsula is a landform that extends from a mainland and is only connected to land on one side. Peninsulas exist on each continent. The largest peninsula in the world is the Arabian Peninsula. Etymology The word ''peninsula'' derives , . T ...

Terminology

In Indian sources, the earliest name connected with Southeast Asia is . Another possible early name of mainland Southeast Asia was ''

Suvarṇabhūmi (; Pali: ') is a toponym, that appears in many ancient Indian literary sources and Buddhist texts such as the '' Mahavamsa'', some of the Jataka tales, the ''Milinda Panha'' and the ''Ramayana''. Though its exact location is unknown and remains ...

'' ("land of gold"), a toponym, that appears in many ancient Indian literary sources and Buddhist texts, but which, along with ''

Suvarṇadvīpa (; Pali: ') is a toponym, that appears in many ancient Indian literary sources and Buddhist texts such as the '' Mahavamsa'', some of the Jataka tales, the ''Milinda Panha'' and the ''Ramayana''. Though its exact location is unknown and remains ...

'' ("island" or "peninsula of gold"), are also thought to refer to insular Southeast Asia. The origins of the name Indo-China are usually attributed jointly to the Danish-French geographer

Conrad Malte-Brun Conrad Malte-Brun (; born Malthe Conrad Bruun; 12 August 177514 December 1826), sometimes referred to simply as Malte-Brun, was a Dano- French geographer and journalist. His second son, Victor Adolphe Malte-Brun, was also a geographer. Today he ...

, who referred to the area as in 1804, and the Scottish linguist

John Leyden ] John Caspar Leyden, M.D., (8 September 1775 – 28 August 1811) was a Scottish indologist. Biography Leyden was born at Denholm on the River Teviot, not far from Hawick. His father, a shepherd, had contrived to send him to Edinburgh Univer ...

, who used the term ''Indo-Chinese'' to describe the area's inhabitants and their languages in 1808. Scholarly opinions at the time regarding China's and India's historical influence over the area were conflicting, and the term was itself controversial—Malte-Brun himself later argued against its use in a later edition of his ''Universal Geography'', reasoning that it overemphasized Chinese influence, and suggested ''Chin-India'' instead. Nevertheless, ''Indo-China'' had already gained traction and soon supplanted alternative terms such as ''

Further India Farther India, Further India, or Ultraindia, is an old term, now rarely used, for Southeast Asia, seen in colonial days from Europe as the part of the Far East beyond the Indian subcontinent, but south of China. It refers to Indochina (Cambodia ...

'' and the ''Peninsula beyond the Ganges''. Later, however, as the French established the colony of

(covering present-day Cambodia, Laos, and Vietnam), use of the term became more restricted to the French colony, and today the area is usually referred to as Mainland Southeast Asia.

Biogeography

biogeography Biogeography is the study of the species distribution, distribution of species and ecosystems in geography, geographic space and through evolutionary history of life, geological time. Organisms and biological community (ecology), communities o ...

, the Indochinese bioregion is a major region in the

Indomalayan realm The Indomalayan realm is one of the eight biogeographic realms. It extends across most of South and Southeast Asia and into the southern parts of East Asia. Also called the Oriental realm by biogeographers, Indomalaya spreads all over the Ind ...

, and also a phytogeographical

floristic region A phytochorion, in phytogeography, is a geographic area with a relatively uniform composition of plant species. Adjacent phytochoria do not usually have a sharp boundary, but rather a soft one, a transitional area in which many species from both re ...

in the

Oriental Paleotropical Kingdom The Indomalayan realm is one of the eight biogeographic realms. It extends across most of South and Southeast Asia and into the southern parts of East Asia. Also called the Oriental realm by biogeographers, Indomalaya spreads all over the Ind ...

. It includes the native flora and fauna of all the countries above. The adjacent Malesian Region covers the

n countries, and straddles the Indomalayan and

Australasian realm The Australasian realm is one of eight biogeographic realms that is coincident with, but not (by some definitions) the same as, the geographical region of Australasia. The realm includes Australia, the island of New Guinea (comprising Papua Ne ...

Geography

The Indochinese Peninsula projects southward from the Asian continent proper. It contains several mountain ranges extending from the

Tibetan Plateau The Tibetan Plateau, also known as the Qinghai–Tibet Plateau or Qingzang Plateau, is a vast elevated plateau located at the intersection of Central Asia, Central, South Asia, South, and East Asia. Geographically, it is located to the north of H ...

in the north, interspersed with

lowlands Upland and lowland are conditional descriptions of a plain based on elevation above sea level. In studies of the ecology of freshwater rivers, habitats are classified as upland or lowland. Definitions Upland and lowland are portions of a ...

largely drained by three major river systems running in a north–south direction: the

Irrawaddy Irrawaddy or Ayeyarwady may refer to: *Irrawaddy River, the main river of Burma *Irrawaddy Delta, a rice growing region of the country *Irrawaddy, an alternative spelling of Ayeyarwady Region, an administrative division of Burma *''The Irrawaddy'' ...

(serving

), the

Chao Phraya The Chao Phraya River is the major river in Thailand, with its low alluvial plain forming the centre of the country. It flows through Bangkok and then into the Gulf of Thailand. Etymology Written evidence of the river being referred to by the ...

(in

), and the

Mekong The Mekong or Mekong River ( , ) is a transboundary river in East Asia and Southeast Asia. It is the world's twelfth-longest river and the third-longest in Asia with an estimated length of and a drainage area of , discharging of wat ...

(flowing through

Northeastern Thailand Northeast Thailand or Isan (Isan/, ; ; also written as Isaan, Isarn, Issarn, Issan, Esan, or Esarn; from Pāli ''isāna'' or Sanskrit ईशान्य ''īśānya'' "northeast") consists of 20 provinces in northeastern Thailand. Isan is T ...

and

). To the south it forms the

Malay Peninsula The Malay Peninsula is located in Mainland Southeast Asia. The landmass runs approximately north–south, and at its terminus, it is the southernmost point of the Asian continental mainland. The area contains Peninsular Malaysia, Southern Tha ...

, located on which are

Southern Thailand Southern Thailand (formerly Southern Siam and Tambralinga) is the southernmost cultural region of Thailand, separated from Central Thailand by the Kra Isthmus. Geography Southern Thailand is on the Malay Peninsula, with an area of around , bo ...

and

; the latter is variably considered part of Mainland Southeast Asia or separately as part of

. Most of it has a

tropical climate Tropical climate is the first of the five major climate groups in the Köppen climate classification identified with the letter A. Tropical climates are defined by a monthly average temperature of or higher in the coolest month, featuring hot te ...

except for

subtropical The subtropical zones or subtropics are geographical zone, geographical and Köppen climate classification, climate zones immediately to the Northern Hemisphere, north and Southern Hemisphere, south of the tropics. Geographically part of the Ge ...

places such as

Northern Vietnam Northern Vietnam or '' Tonkin'' () is one of three geographical regions in Vietnam. It consists of three geographic sub-regions: the Northwest (Vùng Tây Bắc), the Northeast (Vùng Đông Bắc), and the Red River Delta (Đồng Bằng Sôn ...

Culture

Ethnolinguistic Groups of Mainland Southeast Asia

Mainland Southeast Asia contrasts with

, mainly through the division of largely land-based lifestyles in Indochina and the sea-based lifestyles of the Indonesian archipelago and

Philippine archipelago As an archipelago, the Philippines comprises about 7,641 islands clustered into three major island groups: Luzon, the Visayas, and Mindanao. Only about 2,000 islands are inhabited,

, as well as the dividing line between the

Austroasiatic The Austroasiatic languages ( ) are a large language family spoken throughout Mainland Southeast Asia, South Asia and East Asia. These languages are natively spoken by the majority of the population in Vietnam and Cambodia, and by minority popu ...

, Tai–Kadai, and

Sino-Tibetan languages Sino-Tibetan (also referred to as Trans-Himalayan) is a family of more than 400 languages, second only to Indo-European in number of native speakers. Around 1.4 billion people speak a Sino-Tibetan language. The vast majority of these are the 1.3 ...

(spoken in Mainland Southeast Asia) and the

Austronesian Austronesian may refer to: *The Austronesian languages *The historical Austronesian peoples The Austronesian people, sometimes referred to as Austronesian-speaking peoples, are a large group of peoples who have settled in Taiwan, maritime Sout ...

languages (spoken in Maritime Southeast Asia). The languages of the mainland form the

Mainland Southeast Asia linguistic area The Mainland Southeast Asia linguistic area is a sprachbund including languages of the Sino-Tibetan, Hmong–Mien (or Miao–Yao), Kra–Dai, Austronesian and Austroasiatic families spoken in an area stretching from Thailand to China. Neighb ...

: although belonging to several independent language families, they have converged over the course of history and share a number of typological similarities. The countries of mainland Southeast Asia received cultural influence from both India and China to varying degrees. Cambodia, Laos, Myanmar and Thailand are all influenced by

Indian culture Indian culture is the heritage of social norms and technologies that originated in or are associated with the ethno-linguistically diverse nation of India, pertaining to the Indian subcontinent until 1947 and the Republic of India post-1947. ...

, only Vietnam is influenced by

Chinese culture Chinese culture () is one of the Cradle of civilization#Ancient China, world's earliest cultures, said to originate five thousand years ago. The culture prevails across a large geographical region in East Asia called the Sinosphere as a whole ...

but still has minor influences from India, largely via the

Champa Champa (Cham language, Cham: ꨌꩌꨛꨩ, چمڤا; ; 占城 or 占婆) was a collection of independent Chams, Cham Polity, polities that extended across the coast of what is present-day Central Vietnam, central and southern Vietnam from ...

civilization that Vietnam conquered during its southward expansion. Overall, Mainland Southeast Asia is predominantly

Buddhist Buddhism, also known as Buddhadharma and Dharmavinaya, is an Indian religion and List of philosophies, philosophical tradition based on Pre-sectarian Buddhism, teachings attributed to the Buddha, a wandering teacher who lived in the 6th or ...

with minority

Muslim Muslims () are people who adhere to Islam, a Monotheism, monotheistic religion belonging to the Abrahamic religions, Abrahamic tradition. They consider the Quran, the foundational religious text of Islam, to be the verbatim word of the God ...

and

Hindu Hindus (; ; also known as Sanātanīs) are people who religiously adhere to Hinduism, also known by its endonym Sanātana Dharma. Jeffery D. Long (2007), A Vision for Hinduism, IB Tauris, , pp. 35–37 Historically, the term has also be ...

populations.

References

External links

{{Authority control Geography of Southeast Asia Peninsulas of Southeast Asia Southeast Asian studies Names of places in Asia