Angel island:
West coast
Established as a military facility used primarily by immigrants from the Pacific rim
Immigrants where held for long periods of time before being allowed into the US
Currently part of the national
Many political and social organizations
The differences in how the war affected each nation, with the US having less destruction and casualties compared to the Soviet Union is your best answer.
Another reason is the fact that they used two seperate types of government, and each tries to impose it's own kind on other countries in an effort to be able to be the "leader of the world".
hope this helps
It brought on new lifestyles with the Agricultural Revolution Just finished World History
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