But that's because there are no humans there hunting or fishing.

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Moreover, this definitely indicates that humans were living and hunting in North America some 800-1, 100 years before the Clovis culture developed.

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Humans co-operated with each other in hunting and fighting, but this co-operation occurred within groups of close relatives.

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Once humans had mastered farming, they could generate a surplus freeing others from the task of hunting for food.

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