(also called the Sioux Treaty of 1868) was an agreement between the United States and the Oglala, Miniconjou, and Brulé bands of Lakota people, Yanktonai Dakota, and Arapaho Nation signed in 1868 at Fort Laramie in the Wyoming Territory, guaranteeing to the Lakota ownership of the Black Hills, and further land and hunting rights in South Dakota, Wyoming, and Montana. The Powder River Country was to be henceforth closed to all whites. The treaty ended Red Cloud's War.
In the treaty, as part of the U.S. vendetta to "divide and conquer", the U.S. included all Ponca lands in the Great Sioux Reservation. Conflict between the Ponca and the Sioux/Lakota, who now claimed the land as their own by U.S. law, forced the U.S. to remove the Ponca from their own ancestral lands in Nebraska to poor land in Oklahoma.