The Crow were the first of the contemporary Indian residents to enter Montana from the east, arriving as early as 1600 in response to dislocations farther east. The Crow, or the Absarokee, originally lived in the Great Lakes region, where they lived in earthen lodges and practiced agriculture.
Having arrived first onto the Montana plains, the Crow had the most to lose as other tribes crowded into the state. They became sworn enemies of the Blackfeet and later the Sioux.
© W.C. McRae & Judy Jewell from Moon Montana, 7th Edition