Henry Clay issued the Monroe Doctrine how?

The Monroe Doctrine was a principle of United States foreign policy from the 19th century onwards. This doctrine, created by Henry Clay, declared any form of European interference in the Western Hemisphere as a direct confrontation against the United States, thus seeking to guarantee that the European nations would not interfere in the affairs of the American continent, which would guarantee the territorial expansion of the United States. However, it promised to respect the existing colonies in the hands of the European powers.

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