IntroductionSioux or Dakota, confederation of Native North American tribes, the dominant group of the Hokan-Siouan linguistic stock, which is divided into several separate branches (see Native American languages). The Sioux, or Dakota, consisted of seven tribes in three major divisions: Wahpekute, Mdewakantonwan, Wahpetonwan, Sisitonwan (who together formed the Santee or Eastern division, sometimes referred to as the Dakota), the Ihanktonwan, or Yankton, and the Ihanktonwana, or Yanktonai (who form the Middle division, sometimes referred to as the Nakota), and the Titonwan, or Teton (who form the Western division, sometimes referred to as the Lakota). The Tetons, originally a single band, divided into seven sub-bands after the move to the plains, these seven including the Hunkpapa, Sihasapa (or Blackfoot), and Oglala.
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