"The Blackfoot Confederacy, Niitsitapi or Siksikaitsitapi (ᖹᐟᒧᐧᒣᑯ, meaning "the people" or "Blackfoot-speaking real people"[a]), is a historic collective name for linguistically related groups that make up the Blackfoot or Blackfeet people: the Siksika ("Blackfoot"), the Kainai or Blood ("Many Chiefs"), and two sections of the Peigan or Piikani ("Splotchy Robe") – the Northern Piikani (Aapátohsipikáni) and the Southern Piikani (Amskapi Piikani or Pikuni). Broader definitions include groups such as the Tsúùtínà (Sarcee) and A'aninin (Gros Ventre) who spoke quite different languages but allied with or joined the Blackfoot Confederacy." - (en.wikipedia.org 11.08.2021)
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