Although a treaty between the United States and the Lakotas, it had profound consequences for the Crows. In order to realize the Lakota demand to the western Powder River area, the United States first had to buy it from the 1851 treaty right holder, the Crow, and then recognize the Lakota tribe as the next proprietor. Consequently, parallel with the negotiations with the Lakota, the United States had treaty talks with the Crow Indians. On May 7, 1868, the Crows accepted to sell large parts of their 1851 treaty territory to the United States. The ceded area included the western Powder River hunting grounds of the Crow, already for years taken in possession by the Lakotas and their allies without consent. The Crows also agreed to settle on a smaller reservation right on the south side of the Yellowstone, in the center of their 1851 territory. The Crow reservation included "The Valley of Chieftains", to the whites known as the valley of Little Bighorn River.