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02/12/1823 President James Monroe declares his "Monroe Doctrine"

The Monroe Doctrine was a United States policy of opposing European colonialism in the Americas beginning in 1823. It stated that further efforts by European nations to take control of an independent state in North or South America would be viewed as "the manifestation of an unfriendly disposition toward the United States."


  • Seeds of the Monroe Doctrine 

  • The Doctrine 

  • Effects 

  • Criticism