The American Frontier
The American frontier includes the geography, history, folklore, and cultural expression of life in the forward wave of American expansion that began with European colonial settlements in the early 17th century and ended with the admission of the last few territories as states in 1912.
Native Americans, also known as American Indians, are the indigenous peoples of the United States. The ancestors of living Native Americans arrived in what is now the United States at least 15,000 years ago. A vast variety of peoples, societies and cultures subsequently developed.