Rocky Boy Tribe of Chippewa Indians of Montana
These Algonquian Indians are really Anishinabe. They originally lived in northern Minnesota, and in fact, the "Arapaho Tribe" was forced by the Seven Fires Prophecy to migrate towards the west. By the mid 18th century, the Anishinabe people forced the Dakota to evacuate northern Minnesota, which resulted in them fleeing into eastern North Dakota and eastern South Dakota, with their Anishinabe subjugators, then Montana and further westward. In Montana, "the Arapaho Indians" joined with an earlier Anishinabe population. In fact, the Anishinabe people of Montana were civilized. There are strange ruins in Great Falls, Montana and probably more which are now submerged by Fort Peck Resevoir and other Resevoirs in North Dakota and South Dakota.
There was a northern and southern Arapaho people. The southern Arapaho lived as far south as Oklahoma and Texas. All Arapaho participated in the series of wars fought on the plains of the United States. By 1866, the northern Arapaho's, "the Gros Ventre Tribe of Montana", joined with other Anishinabek and their allies and participated in the 1866-1868 Red Cloud War; the 1876 Black Hills War; and the 1877 Nez Perce War. After the 1877 Nez Perce War, "the tribe of Gros Ventre Indians" were settled on the large Fort Belknap Reservation in Montana, with the Assiniboine. There is another Arapaho Reservation in Wyoming. That be the Wind River Reservation.
The Gros Ventre of Montana
Their Reservation covers 654,000 acres.
Their Language is Anishinabe and Nakota
Their Population is 3,000
The Wind River Arapaho of Wyoming
Their Reservation covers 2,200,000 acres, which is 3,437.50 sq. mi.
Their language is Anishinabe and Uto-Aztecan
Their Population is 7,400