The Territory of Missouri was an

organized incorporated territory of the United States The territory of the United States and its overseas possessions has evolved over time, from the colonial era to the present day. It includes formally organized territories, proposed and failed states, unrecognized breakaway states, internatio ...

that existed from June 4, 1812, until August 10, 1821. In 1819, the Territory of Arkansas was created from a portion of its southern area. In 1821, a southeastern portion of the territory was admitted to the Union as the State of

Missouri Missouri (''see #Etymology and pronunciation, pronunciation'') is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it border ...

, and the rest became unorganized territory for several years.

History

The Missouri Territory was originally known as the larger

Louisiana Territory The Territory of Louisiana or Louisiana Territory was an organized incorporated territory of the United States that existed from July 4, 1805, until June 4, 1812, when it was renamed the Missouri Territory. The territory was formed out of t ...

since 1804 (encompassing most of the 1803

Louisiana Purchase The Louisiana Purchase () was the acquisition of the Louisiana (New France), territory of Louisiana by the United States from the French First Republic in 1803. This consisted of most of the land in the Mississippi River#Watershed, Mississipp ...

from the French Empire) and was renamed by the

U.S. Congress The United States Congress is the legislative branch of the federal government of the United States. It is a bicameral legislature, including a lower body, the U.S. House of Representatives, and an upper body, the U.S. Senate. They both ...

on June 4, 1812, to avoid confusion with the new 18th

state State most commonly refers to: * State (polity), a centralized political organization that regulates law and society within a territory **Sovereign state, a sovereign polity in international law, commonly referred to as a country **Nation state, a ...

Louisiana Louisiana ( ; ; ) is a state in the Deep South and South Central regions of the United States. It borders Texas to the west, Arkansas to the north, and Mississippi to the east. Of the 50 U.S. states, it ranks 31st in area and 25 ...

(further to the south on the lower

Mississippi River The Mississippi River is the main stem, primary river of the largest drainage basin in the United States. It is the second-longest river in the United States, behind only the Missouri River, Missouri. From its traditional source of Lake Ita ...

with its river port city of

New Orleans New Orleans (commonly known as NOLA or The Big Easy among other nicknames) is a Consolidated city-county, consolidated city-parish located along the Mississippi River in the U.S. state of Louisiana. With a population of 383,997 at the 2020 ...

), which had been admitted to the Union on April 30, 1812. On October 1, 1812, newly appointed fourth Territorial Governor

William Clark William Clark (August 1, 1770 – September 1, 1838) was an American explorer, soldier, Indian agent, and territorial governor. A native of Virginia, he grew up in pre-statehood Kentucky before later settling in what became the state of Misso ...

(1770–1838, served 1813–1820), organized the five administrative districts of the former

into the first five counties of the then new Missouri Territory. The

Anglo-American Convention of 1818 The Convention respecting fisheries, boundary and the restoration of slaves, also known as the London Convention, Anglo-American Convention of 1818, Convention of 1818, or simply the Treaty of 1818, is an international treaty signed in 1818 betw ...

established the northern boundary of the six years old Missouri Territory with the adjacent

British North America British North America comprised the colonial territories of the British Empire in North America from 1783 onwards. English colonisation of North America began in the 16th century in Newfoundland, then further south at Roanoke and Jamestown, ...

(future

Dominion of Canada While a variety of theories have been postulated for the name of Canada, its origin is now accepted as coming from the St. Lawrence Iroquoian word , meaning 'village' or 'settlement'. In 1535, indigenous inhabitants of the present-day Quebec C ...

) territory of

Rupert's Land Rupert's Land (), or Prince Rupert's Land (), was a territory in British North America which comprised the Hudson Bay drainage basin. The right to "sole trade and commerce" over Rupert's Land was granted to Hudson's Bay Company (HBC), based a ...

at the 49th parallel north of latitude. This gave the Missouri Territory the

Red River Valley The Red River Valley is a region in central North America that is drained by the Red River of the North; it is part of both Canada and the United States. Forming the border between Minnesota and North Dakota when these territories were admitted ...

(

Red River of the North The Red River (), also called the Red River of the North () to differentiate it from the Red River of the South, Red River in the south of the continent, is a river in the north-central United States and central Canada. Originating at the confl ...

), south of the 49th parallel and gave to Rupert's Land that slice of upper Missouri River Valley north of the 49th parallel. The

Adams–Onís Treaty The Adams–Onís Treaty () of 1819, also known as the Transcontinental Treaty, the Spanish Cession, the Florida Purchase Treaty, or the Florida Treaty,Weeks, p. 168. was a treaty between the United States and Spain in 1819 that ceded Florida to ...

of 1819, between the

Kingdom of Spain Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...

and the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

, established the southern and western boundaries of the old

territory of 1803, with the Royal Spanish territories of Spanish Texas and

Santa Fe de Nuevo México Santa Fe de Nuevo México (; shortened as Nuevo México or Nuevo Méjico, and translated as New Mexico in English) was a province of the Spanish Empire and New Spain, and later a territory of independent Mexico. The first capital was San Juan d ...

. As a result of the protracted negotiations, the United States surrendered a significant portion of the Missouri Territory claimed in the southwest to

Spain Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...

in exchange for the peninsula of

Spanish Florida Spanish Florida () was the first major European land-claim and attempted settlement-area in northern America during the European Age of Discovery. ''La Florida'' formed part of the Captaincy General of Cuba in the Viceroyalty of New Spain, and th ...

further east. The Convention of 1818 and the subsequent

the following year, would be the last significant losses of United States claimed territories from the continental

contiguous United States The contiguous United States, also known as the U.S. mainland, officially referred to as the conterminous United States, consists of the 48 adjoining U.S. states and the District of Columbia of the United States in central North America. The te ...

, although the cession of lands north of the 49th parallel would turn out to be the only ''permanent'' cession of U.S. territory (the territories ceded to the

in 1819 would be re-taken by the U.S. by force, following the Annexation of Texas Republic (1845) and the

Mexican–American War The Mexican–American War (Spanish language, Spanish: ''guerra de Estados Unidos-México, guerra mexicano-estadounidense''), also known in the United States as the Mexican War, and in Mexico as the United States intervention in Mexico, ...

, (1846–1848), along with the

Mexican Cession The Mexican Cession () is the region in the modern-day Western United States that Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United S ...

of territories further west of 1849. On March 2, 1819, all of the Missouri Territory directly south of the

parallel 36°30' north Parallel may refer to: Mathematics * Parallel (geometry), two lines in the Euclidean plane which never intersect * Parallel (operator), mathematical operation named after the composition of electrical resistance in parallel circuits Science a ...

, except the so-called

Missouri Bootheel The Missouri Bootheel is a Salient (geography), salient (protrusion) located in the southeasternmost part of the U.S. state of Missouri, extending south of 36°30′ north latitude, so called because its shape in relation to the rest of the sta ...

between the

and the Saint Francis River north of the

36th parallel north Following are circles of latitude between the 35th parallel north and the 40th parallel north: 36th parallel north The 36th parallel north is a circle of latitude that is 36 degrees north of the Earth's equatorial plane. It crosses Africa, th ...

, was designated the new federal Territory of Arkansaw. (The spelling of Arkansaw would be changed a few years later, although the proper pronunciation of the name would be debated until 1881). The southeastern portion of the remaining Missouri Territory was admitted to the Union as the 21st

State of Missouri Missouri (''see #Etymology and pronunciation, pronunciation'') is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it border ...

on August 10, 1821.

St. Louis St. Louis ( , sometimes referred to as St. Louis City, Saint Louis or STL) is an independent city in the U.S. state of Missouri. It lies near the confluence of the Mississippi and the Missouri rivers. In 2020, the city proper had a populatio ...

on the west bank of the

was the

capital Capital and its variations may refer to: Common uses * Capital city, a municipality of primary status ** Capital region, a metropolitan region containing the capital ** List of national capitals * Capital letter, an upper-case letter Econom ...

of the Missouri Territory. The remaining portion of the territory to the north, northwest, west and southwest, consisting of the present states of

Iowa Iowa ( ) is a U.S. state, state in the upper Midwestern United States, Midwestern region of the United States. It borders the Mississippi River to the east and the Missouri River and Big Sioux River to the west; Wisconsin to the northeast, Ill ...

Nebraska Nebraska ( ) is a landlocked U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders South Dakota to the north; Iowa to the east and Missouri to the southeast, both across the Missouri River; Ka ...

, and the Dakotas, most of

Kansas Kansas ( ) is a landlocked U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Nebraska to the north; Missouri to the east; Oklahoma to the south; and Colorado to the west. Kansas is named a ...

Wyoming Wyoming ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States, Western United States. It borders Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho t ...

Montana Montana ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States. It is bordered by Idaho to the west, North Dakota to the east, South Dakota to the southeast, Wyoming to the south, an ...

, and parts of

Colorado Colorado is a U.S. state, state in the Western United States. It is one of the Mountain states, sharing the Four Corners region with Arizona, New Mexico, and Utah. It is also bordered by Wyoming to the north, Nebraska to the northeast, Kansas ...

Minnesota Minnesota ( ) is a U.S. state, state in the Upper Midwestern region of the United States. It is bordered by the Canadian provinces of Manitoba and Ontario to the north and east and by the U.S. states of Wisconsin to the east, Iowa to the so ...

and

New Mexico New Mexico is a state in the Southwestern United States, Southwestern region of the United States. It is one of the Mountain States of the southern Rocky Mountains, sharing the Four Corners region with Utah, Colorado, and Arizona. It also ...

, effectively became reverted to the status of unorganized territory after 1821, when Missouri became the 21st state. Thirteen years later in 1834, the portion in the north and east of the upper

Missouri River The Missouri River is a river in the Central United States, Central and Mountain states, Mountain West regions of the United States. The nation's longest, it rises in the eastern Centennial Mountains of the Bitterroot Range of the Rocky Moun ...

was attached to the

Michigan Territory The Territory of Michigan was an organized incorporated territory of the United States that existed from June 30, 1805, until January 26, 1837, when the final extent of the territory was admitted to the Union as the State of Michigan. Detroit ...

around the

Great Lakes The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes spanning the Canada–United States border. The five lakes are Lake Superior, Superior, Lake Michigan, Michigan, Lake Huron, H ...

. Over time, various federal territories in

the West West is a cardinal direction or compass point. West or The West may also refer to: Geography and locations Global context * The Western world * Western culture and Western civilization in general * The Western Bloc, countries allied with NAT ...

were created in whole or in part from its remaining area of unorganized status, as follows:

Indian Territory Indian Territory and the Indian Territories are terms that generally described an evolving land area set aside by the Federal government of the United States, United States government for the relocation of Native Americans in the United States, ...

(1834), added with future

Oklahoma Oklahoma ( ; Choctaw language, Choctaw: , ) is a landlocked U.S. state, state in the South Central United States, South Central region of the United States. It borders Texas to the south and west, Kansas to the north, Missouri to the northea ...

(1890),

(1838),

(1849),

and

(both 1854),

and Dakota (both 1861),

Idaho Idaho ( ) is a landlocked U.S. state, state in the Pacific Northwest and Mountain states, Mountain West subregions of the Western United States. It borders Montana and Wyoming to the east, Nevada and Utah to the south, and Washington (state), ...

(1863),

(1864), and

(1868). In the 1820 United States census, 15 counties in the old Missouri Territory reported the following population counts:

References

External links

History

See also

References

External links