Which policy declared the United States the dominant power in the Western Hemisphere?

Question

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The Monroe Doctrine, announced by President James Monroe in 1823, declared that the United States would not tolerate European intervention in the affairs of independent nations in the Western Hemisphere and that the U.S. would be the dominant power in the region. This policy has had a lasting impact on U.S. foreign policy and relations with Latin America.

Which Policy Declared the United States the Dominant Power in the Western