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Oceti Sakowin, broad alliance of Indigenous North American peoples who spoke three related languages within the Siouan language family, commonly known by the exonym (a name given and used by outsiders) Sioux. The Oceti Sakowin people are divided into three groups based on the language variant they speak. The Dakota—also known as the Isanti (Santee) or Eastern Dakota (Sioux)—comprise the Mdewkanton, Wahpeton, Wahpekute, and Sisseton. The Nakota, who may additionally identify as Dakota and are...