The New World periods began with the crossing of the Paleo-Indians, Athabaskan, Aleuts and Eskimos along the Bering Land Bridge onto the North American continent. The Paleo-Indians were the first people who entered, and subsequently inhabited, the Americas during the final glacial episodes of the late Pleistocene period. Evidence suggests big-game hunters crossed the Bering Strait from Asia into North America over a land and ice bridge (Beringia), that existed between 45,000 BCE – 12,000 BCE, following herds of large herbivores far into Alaska. In their book, Method and Theory in American Archaeology, Gordon Willey and Philip Phillips defined five cultural stages for the Americas, including the three prehistoric Lithic, Archaic and Formative stages. The historic stages are the Classic and Post-Classic stages. Lithic edit The Lithic period occurred from 12,000 to 6,000 years before present and included the Clovis, Folsom and Plano cultures. Clovis culture was considered the first cu...
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