Answer: Because japan had destroyed their best navel ships.
Explanation:
<span>A ice land bridge called beringia formed and they walked on foot across or in boats along it's coast. They migrated because of he extremely cold conditions and scarce amounts of foods.
I hope this helps.
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<span>The Freedmen’s Bureau pushed hardest for strong protections for emancipated slaves’ civil rights. Set up by Congress, the Freedmen’s Bureau provided legal assistance, food, medical care and so on to recently emancipated Black slaves.</span>
