After the defeat of the Indian tribes during the Indian Wars of the 1870s, the United States created several smaller reservations. History of the Reservation: The terms of the Fort Laramie Treaty of 1868 placed the Lakota on one large reservation that covered parts of North Dakota, South Dakota, and four other states. They lived in organized bands, warred and raided, and depended on buffalo for food and clothing. The Lakota are the archetypal Plains Indian. Soon after their arrival in the Black Hills, the Lakota split into seven tribes, among which was the Brule. The Lakota acquired horses around 1740 and crossed the Missouri River shortly after, arriving in the Black Hills in 1775. Conflicts with the Cree and Chippewa, as well as the lure of the Great Plains buffalo herds, incited the Sioux to move farther west in the mid-17th century.

About the Brule Sioux: The Siouan language family, including Lakota-Dakota-Nakota speakers, inhabited over 100 million acres in the upper Mississippi Region in the 16th and early 17th centuries.

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