it goes back farther then most realize. The Pueblo Indians they called them Anasazi or their ancient enemy. The pueblo's said the Anasazi built the structures. Archaeologist suggests there where up to three million in North America +12,000 years ago.
"The works of the Ohio were raised by white Indians. These white Indians, according to the red Indians, were to have come from the East; and when they left the lakes without shores (the sea), they came dressed like the palefaces of today."
"Rene Cateaubraiand, "Voyages to America 1826"
I wonder what happened to the Anasazi... drought... cannibalism... attacks by other tribes...