ᅟᅟᅟᅟᅟᅟᅟᅟᅟᅟᅟᅟ
<span>ᅟᅟᅟᅟᅟᅟᅟᅟᅟᅟᅟᅟ</span>
The Bering Strait Land Bridge is a good example of this. During the Ice Age, humans from Asia migrated to what now is called North America in order to thrive in new lands, with new farming style.
<span>Economic issues
is what i can think of hope it helps.
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