Cornerstone of American foreign policy that told European powers to stay out of the affairs of the Western Hemisphere.

(A) Roosevelt Corollary

(B) Adams Doctrine

(C) Truman Doctrine

(D) ** Monroe Doctrine


Concept note-1: -The Monroe Doctrine is the best known U.S. policy toward the Western Hemisphere. Buried in a routine annual message delivered to Congress by President James Monroe in December 1823, the doctrine warns European nations that the United States would not tolerate further colonization or puppet monarchs.

Concept note-2: -The three main concepts of the doctrine-separate spheres of influence for the Americas and Europe, non-colonization, and non-intervention-were designed to signify a clear break between the New World and the autocratic realm of Europe.

Concept note-3: -In 1823 U.S. President James Monroe proclaimed the U.S. protector of the Western Hemisphere by forbidding European powers from colonizing additional territories in the Americas. In return, Monroe committed to not interfere in the affairs, conflicts, and extant colonial enterprises of European states.

Concept note-4: -The Monroe Doctrine was ultimately unsuccessful in keeping the U.S. out of European affairs. That said, the U.S. largely stayed out of European affairs for almost 100 years after President James Monroe made his speech in 1823.