With the discovery of gold in their scared Black Hills, the Sioux had sporadic conflicts with the new immigrants, leading to the Indian Wars and eventually the Battle of the Little Big Horn.
The Sioux Nation consists of three geographically distinct divisions of peoples who speak a Siouan language: the Lakota, Dakota, and Nakota. In the language of the Sioux, the names Lakota, Dakota, and Nakota mean "friends." The Sioux were famed for breeding and training horses.
Military advantages of the in-game Sioux civilization are primarily cavalry based. The Sioux strike hard and fast.