The Arapaho (in French: Arapahos, Gens de Vache) are a tribe of Native Americans historically living on the eastern plains of Colorado and Wyoming. They were close allies of the Cheyenne tribe and loosely aligned with the Sioux. Arapaho is an Algonquian language closely related to Gros Ventre, who are seen as an early offshoot of the Arapaho. Blackfoot and Cheyenne are the other Algonquian languages on the Plains, but are quite different from Arapaho. By the 1850s, Arapaho bands separated into… (More on Arapaho)