Piegan Blackfeet
For much of prehistory, no permanent settlements existed at or near Great Falls, though Salish Indians seasonally hunted bison in the region. Around 1600, Piegan Blackfeet Indians, migrating west, entered the area, pushing the Salish back into the Rocky Mountains and claiming the area now occupied by Great Falls. The area remained territory of the Blackfeet until long after the United States claimed the region in 1803 as part of the Louisiana Purchase.