According to the still-debated Settlement of the Americas, a migration of humans from Eurasia to the Americas took place via Beringia, a land bridge which formerly connected the two continents across what is now the Bering Strait.
This led to widespread migration, cultivation of crops, and subsequently a dramatic rise in population all over the Americas.
The culture received its name from artifacts found near Clovis, New Mexico; the first evidence of this tool complex was excavated in 1932.
Their cultures were quite different from those of the agrarian, proto-industrial immigrants from western Eurasia.
The differences in culture between the established native Americans and immigrant Europeans, as well as shifting alliances among different nations of each culture, caused a great deal of political tension and ethnic violence.
Expansion of European-American populations after the American Revolution resulted in increasing pressure on Native American lands, warfare between the groups, and rising tensions. Government officials thought that by decreasing the conflict between the groups, they could also help the Indians survive.
Remnant groups have descendants living throughout the South.
They have organized and been recognized as tribes since the late 20th century by several states and, in some cases, by the federal government.