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2 votes
What contributed the most to human migration more than ten thousand years ago?

Sturdy boats were invented.
Another Ice Age occurred.
A major volcano erupted in Africa.
A severe drought occurred.

2 Answers

5 votes

The answer is B - another ice age occured

User Abhi V
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4 votes
i believe its Another ice age it sounds like its describing the bering land bridge
User Mpeac
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