The United States signs a treaty with…
April 1858 CE
Pressure to open up what is now southeastern South Dakota to white settlement had become very strong by the late 1850s.
Padaniapapi (Struck-by-the-Ree) and several other Yankton Sioux headmen had journeyed to Washington, D.C., in late 1857 to negotiate a treaty with the federal government.
For more than three and a half months, they worked out the terms of a treaty of land cession. The Treaty of Washington is signed on April 19, 1858.
For about eleven and a half million acres, a payment of approximately one million six hundred thousand dollars in annuities is to paid over the next fifty years.
Specific provisions of the treaty call for educating the tribe to develop skills in agriculture, industrial arts and homemaking.
This treaty provides for the removal of the tribe to a 475,000-acre reservation on the north side of the Missouri River in what is now Charles Mix County. (Charles E. Mix is the commissioner who signs for the federal government.) The U.S. Senate will ratify the treaty on February 16, 1859 and President James Buchanan will authorize it ten days later.
On July 10, 1859, the Yankton Sioux will vacate the ceded lands and moved onto the newly created reservation.