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i think a land bridge is

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i think the Beringia land bridge is a traditional life style to the people who stepped on america.

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i think it means when people are on a journey to go somewhere.

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i think migration is a movement of an animal or a human going a different region or area.

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i think artifacts are something made by a human or a living thing. Or it is a human that is a special artifact this is me.

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i think archaeology is when humans ex-amen a dead body or discovery something and do research on it.