Answer :
The Monroe Doctrine is the most well-known example of US policy toward the Western Hemisphere. The doctrine, buried in President James Monroe's routine annual message to Congress in December 1823, warns European nations that the United States will not tolerate further colonization or puppet monarchs.
The Monroe Doctrine was a foreign policy position of the United States that opposed European colonialism in the Western Hemisphere. It held that any foreign intervention in the political affairs of the Americas was potentially hostile to the United States.
For much of the nineteenth and early twentieth centuries, the doctrine was central to American foreign policy.
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