Answer:
Monroe Doctrine, U.S. foreign policy enunciated by President James Monroe in 1823 that the U.S. would not interfere in European affairs and wars or with existing colonies in the Western Hemisphere. European intervention in the hemisphere
Step-by-step explanation:
a principle of US policy, originated by President James Monroe in 1823, that any intervention by external powers in the politics of the Americas is a potentially hostile act against the US.
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