Original sentence: The Piegan Blackfeet (Aamsskáápipikani (Southern Piikáni/Peigan) or simply as Piikáni in Blackfoot) are a tribe of  Native Americans of the Algonquian language family based in Montana, having lived in this area since around 6,500 BC
Edited sentence: The Piegan Blackfeet (Aamsskáápipikani (Southern Piikáni/Peigan) or simply as Piikáni in Blackfoot) are a tribe of  Native Americans of the Algonquian language family based in Montana