Answer:
C
Explanation:
The key purpose of the Charter of the United Nations was to maintain international peace and security amongst friendly/allied nations along with trying to intervene and neutralize conflict with opposition nations/countries.
The correct answer is "an area of Soviet-aligned nations following WWII."
This is evident from the map based on the information provided in the key. In the key it states that the purple area symbolizes "Socialist FR of Yugoslavia: USSR aligned until 1948." Considering that World War II ends in 1944, this shows that this area was indeed aligned with the Soviet Union after World War II.
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Because it had so many cultures from all around the world, migrating into the US