Missouri Territory
| Territory of Missouri | |||||
| Organized incorporated territory of the United States | |||||
|
|||||
|
|
|||||
 |
|||||
| Government | Organized incorporated territory | ||||
| History | |||||
| • | Renaming of Louisiana Territory | June 4, 1812 | |||
| • | Territory of Arkansas created | 1819 | |||
| • | Missouri statehood | August 10, 1821 | |||
The Territory of Missouri was an organized incorporated territory of the United States that existed from June 4, 1812 until August 10, 1821, when the southeastern portion of the territory was admitted to the Union as the State of Missouri.
The Missouri Territory was originally known as the Louisiana Territory and was renamed by the U.S. Congress in June 1812, to avoid confusion with the new state of Louisiana, which had joined the Union on April 30, 1812.
On October 1, 1812, Governor Clark organized the five administrative districts of the former Louisiana Territory into counties, which later became the first five counties of the state of Missouri.
The Anglo-American Convention of 1818 established the northern boundary of the Missouri Territory with the British territory of Rupert's Land at the 49th parallel north. This gave the Missouri Territory the Red River Valley south of the 49th parallel and gave Rupert's Land the slice of Missouri River Valley north of 49th parallel. The Adams–Onís Treaty of 1819 established the southern and western boundaries of the territory with the Spanish territories of Tejas and Santa Fe de Nuevo México. The United States surrendered a significant portion of the Missouri Territory to Spain in exchange for Spanish Florida. The Convention of 1818 and the Adams–Onís Treaty would be the last significant losses of United States territory from the contiguous United States.
...
Wikipedia