The Dakota Territory consisted of the northernmost part of the land acquired in the Louisiana Purchase in 1803, as well as the southernmost part of Rupert's Land, which was acquired in 1818 when the boundary was changed to

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Dakota Territory was not directly involved in the American Civil War but did raise some troops to defend the settlements following the Dakota War of 1862 which triggered hostilities with the Sioux tribes of Dakota Territory. The Department of the Northwest sent

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Following the Civil War, hostilities continued with the Sioux until the 1868 Treaty of Fort Laramie. By 1868, creation of new territories reduced Dakota Territory to the present boundaries of the Dakotas. Territorial counties were defined in 1872, including

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On February 22, 1889, outgoing President Cleveland signed an omnibus bill that divided the Territory of Dakota in half. North Dakota and South Dakota became states simultaneously on November 2, 1889. President Harrison had the papers shuffled to obscure which

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• Dakota Territory Centennial Commission (1961). Dakota Panorama. Dakota Territory Centennial Commission. OCLC 2063074.
• Lauck, Jon K. (2010). Prairie Republic: The Political

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• Collection of Historical Photographs of the Dakota Territory
• "Dakota, a territory of the United States" . The American Cyclopædia. 1879.

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• Bibliography of North Dakota history
• Bibliography of South Dakota history
• List of governors of Dakota Territory
• American frontier

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