The answer is b Because huge sheets of ice formed over the earth and lowered the sea level exposing a strip of land that allowed ancient people to cross over to Alaska.
Answer:
Videos
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7:37
Empires before World War I (video)
Khan Academy
Khan Academy - Mar 1, 2016
PREVIEW
8:04
1945 - End of World War II (video)
Khan Academy
Khan Academy - Mar 30, 2016
Explanation:
i only have videos watch them if needed. i hope this helps. :D
The U.S, U.K, France and The Soviet Union I think
Answer and Explanation:
Russia's population density is so low because much of the land in northern Russia is uninhabitable because it is frozen tundra