South from Alaska! The Americas

Human occupation of the Americas occurred possibly around 30,000 years ago from Siberia.  Native Americans evolved tribal cultures as they spread south into Mexico and South America. Sophisticated civilisations arose along the southern rivers of the United States; the Olmec, Maya and Aztec in Central America and the Moche, Chimu and Inca in the Andes and Peru only to be conquered in the 16th century by Spanish conquistadors. In North America, Native Americans formed tribal confederations based on a village society until the advent of European dispossession.