Outline of South Dakota territorial evolution

Updated on Oct 23, 2023

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The following outline traces the territorial evolution of the U.S. State of South Dakota.

Outline

Historical territorial claims of the United Kingdom in the present State of South Dakota:

Rupert's Land, 1670–1870

Anglo-American Convention of 1818

Historical territorial claims of France in the present State of South Dakota:

Louisiane, 1682–1764

Treaty of Fontainebleau of 1762

Historical territorial claims of Spain in the present State of South Dakota:

Luisiana, 1764–1803

Third Treaty of San Ildefonso of 1800

Historical territorial claims of France in the present State of South Dakota:

Louisiane, 1803

Vente de la Louisiane of 1803

Historical political divisions of the United States in the present State of South Dakota:

Unorganized territory created by the Louisiana Purchase, 1803–1804

District of Louisiana, 1804–1805

Territory of Louisiana, 1805–1812

Territory of Missouri, 1812–1821

Unorganized territory formerly the northwestern Missouri Territory, 1821–1854

Treaty of Fort Laramie of 1851

Territory of Michigan east of Missouri River, 1805-(1834–1836)-1837

Territory of Wisconsin east of Missouri River, (1836–1838)-1848

Territory of Iowa east of Missouri River, 1838–1846

Territory of Minnesota east of Missouri River, 1849–1858

Territory of Nebraska west of Missouri River, (1854–1861)-1867

Territory of Dakota, 1861-1889

Land between the 43rd parallel north and Keya Paha River or Niobrara River was transferred to the State of Nebraska, 1882

State of South Dakota, since November 2, 1889

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