section_path: History/Indigenous peoples
section_name: Indigenous peoples
paragraph_text: Indigenous peoples
  
  The first inhabitants of North America migrated from Siberia over 12,000 years ago, either across the Bering land bridge or along the now-submerged Ice Age coastline. The Clovis culture, which appeared around 11,000 BC, is believed to be the first widespread culture in the Americas. Over time, Indigenous North American cultures grew increasingly sophisticated, and some, such as the Mississippian culture, developed agriculture, architecture, and complex societies. In the post-archaic period, the Mississippian cultures were located in the midwestern, eastern, and southern regions, and the Algonquian in the Great Lakes region and along the Eastern Seaboard, while the Hohokam culture and Ancestral Puebloans inhabited the southwest. Native population estimates of what is now the United States before the arrival of European immigrants range from around 500,000 to nearly 10 million.