The Monroe Doctrine was a policy by James Monroe basically warning European countries from attempting to further colonize the Western Hemisphere. Not to mention, it failed.
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The correct option is D. During the last six months of the war, the United States of America, release atomic bombs on two different cities of Japan within a short space of interval. This move was not expected at all by the Japanese and it served as the final stroke that breaks the elephant's back. It leads to quick surrender by the Japanese.
No country would mess with South America. As that was what the Monroe Doctrine was it said that the US would protect South America from Europe
I think the theory was global warming because the weather suddenly changed
