the Plains Indians

noun
1
the traditional name for the native North American peoples who once lived on the Great Plains in the western central US. They include the Arapaho, Blackfoot, Cheyenne, Comanche, Crow and Sioux. Many now live on western reservations(= areas of land kept separate for native North Americans to live in).
سرخپوستان دشت‌ها, بومیان دشت‌های بزرگ, سرخپوستان دشت‌های بزرگ