For decades archaeologists thought the first Americans were the Clovis people, who were said to have reached the New World some 13,000 years ago from northern Asia. But fresh archaeological finds have established that humans reached the Americas thousands of years before that.
The ancestors of living Native Americans arrived in what is now the United States at least 15,000 years ago, possibly much earlier, from Asia via Beringia. A vast variety of peoples, societies and cultures subsequently developed.