When did the blackfeet nation exist?

The Blackfeet Nation, an Indigenous group in North America, has a history that predates European contact, with their presence in the northern Great Plains region dating back thousands of years. The tribe was formally recognized by the U.S. government in the late 19th century, particularly after treaties were established in the 1850s and 1860s. Today, the Blackfeet Nation exists as a federally recognized tribe, with its reservation established in 1884 in Montana. Their cultural and historical identity continues to thrive in contemporary society.