The DAKOTA Indians are a Native American tribe that is part of the SIOUX Nation. The term 'DAKOTA' is derived from the SIOUX word meaning 'allies' or 'friends'. The DAKOTA Indians are divided into three main groups: the Ree, the Oglala, and the Teton. The Ree are also known as the Arikara and are located in North and South DAKOTA. The Oglala are located in South DAKOTA and Nebraska. The Teton are located in Wyoming and Montana. The DAKOTA Indians are also part of the larger SIOUAN language family, which includes other tribes such as the Lakota, the Nakota, and the Assiniboine.