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c. 30,000 years ago





With the sea level falling, a land bridge (known as Beringia) forms between Siberia and Alaska, enabling humans to enter the continent of America
c. 15,000 years ago



The La Brea tarpit in Los Angeles shows signs of human activity in the region
c. 15,000 years ago



Archaeological evidence reveals that the central plains of north America by now have a widespread human population
8000 BC







As the ice cap recedes, hunter-gatherers move up the eastern side of America into Newfoundland and the prairie provinces of Canada
c. 8000 BC







As temperatures warm, the sea level rises, submerging the Bering land bridge and isolating the Siberian immigrants as the aboriginal Americans
5000 BC



Human groups adapt to the conditions of northern Canada and then Greenland, living mainly as hunters of marine mammals
1500 BC to 1500 AD







On the grass plains of north America humans gradually hunt to extiinction several American species, including the camel, mammoth and horse
c. 1000 BC






By now the mammoth, the giant bison and the horse are all extinct in America, partly because of the warming climate and partly because of the success of humans with spears
c. 1000 BC







Burial mounds feature in the Ohio valley, built first in the Adena culture and then by Hopewell tribes
c. 200 BC





The Mochica develop a civilization, in the north of modern Peru, known for its realistic pottery sculpture
