Ancient North America.

North America has been home to humans for tens of thousands of years. The first people came from Asia, and they brought with them a Stone Age culture called Clovis that they spread from coast to coast and from pole to pole during their pursuit of the giant mammals that roamed the continent. Thousands of years after the first settlement of North America, the common Clovis culture that the immigrants had brought from Asia splintered into hundreds of different Archaic cultures based on hunting and gathering. The Archaic cultures reflected the particular demands of the different environments in which the people lived. For example, in the arid Southwest, Archaic peoples hunted the fauna of the desert and gathered roots to feed themselves while the inhabitants of the forests of the East subsisted on white-tailed deer and various berries, fruits, and roots. Over time the gathering...