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Yankton Treaty
From Wikipedia, the free encyclopedia
The Yankton Treaty was a treaty signed in 1858 between the United States Government and the Yankton Sioux Tribe (Western Dakota), that ceded most of eastern South Dakota (11 million acres) to the U.S. Government.[1] The treaty was signed in April 1858, and ratified by the United States Congress on February 16, 1859.
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