Dating of Clovis materials has been by association with animal bones and by the use of carbon dating methods. Numerous Paleoindian cultures occupied North America, with some restricted to the Great Plains and Great Lakes of the modern United States of America and Canada, as well as adjacent areas to the west and southwest.
Recent reexaminations of Clovis materials using improved carbon-dating methods produced results of 11,050 and 10,800 radiocarbon years B. According to the oral histories of many of the indigenous peoples of the Americas, they have been living there since their genesis, described by a wide range of traditional creation accounts.
These were complex nomadic cultures based on using horses and traveling seasonally to hunt bison. agents encouraged Native Americans to adopt European-style farming and similar pursuits, but the lands were often too poor to support such uses.The Clovis culture ranged over much of North America and also appeared in South America.The culture is identified by the distinctive Clovis point, a flaked flint spear-point with a notched flute, by which it was inserted into a shaft.  Native Americans in the United States are the indigenous peoples in North America within the boundaries of the present-day continental United States, parts of Alaska, and the island state of Hawaii.
They are composed of numerous, distinct tribes, states, and ethnic groups, many of which survive as intact political communities.
Most of the written historical record about Native Americans was made by Europeans after their immigration to the Americas.