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1. between 1754 and 1763

2. a land bridge between siberia and alaska that was exposed during the most recent ice age when the waters of the bering strait receded.

hope this

i think they would live in caves or natural tunnels

a agree i agree becuase it is very importnat for example it can tlel you about your past for exmaple   the first culture was the semerians which people are sitll tryignt o uncover there secrets the wall is just anohter treasure that has thousnads of secrets in it to be uncovered