Blackfoot Confederacy. The Blackfoot Confederacy, Niitsitapi or Siksikaitsitapi is a historic collective name for linguistically related groups that make up the Blackfoot or Blackfeet people: The Siksika, the Kainai or Kainah, and two sections of the Piikani, the Northern Piikani and the Southern Piikani.
   Broader definitions include groups, like the Tsúùtínà and A'aninin, spoke quite different languages but allied or joined with the Blackfoot Confederacy as well. Historically, the member peoples of the Confederacy were nomadic bison hunters and trout fishermen, who ranged across large areas of the northern Great Plains of western North America, specifically the semi-arid shortgrass prairie ecological region.
   They followed the bison herds as they migrated between what are now the United States and Canada, as far north as the Bow River. In the first half of the 18th century, they acquired horses and firearms from white traders and their Cree and Assiniboine go-betweens.
   The Blackfoot used these to expand their territory at the expense of neighboring tribes. Today, three First Nation band governments reside in Canada in the provinces of Saskatchewan, Alberta, and British Columbia, and the Blackfeet Tribe of the Blackfeet Indian Reservation is a federally recognized Native American tribe in Montana, United States.
   Originally the Blackfoot/Plains Confederacy consisted of three peoples based on kinship and
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