What important concept was put in place with the Monroe Doctrine?

A) Foreign countries were required to stay out of North and South America.
B) The European countries that had a presence in the Americas were forced to give up their colonies to the United States.
C) The U.S. had a right to interfere in European politics.
D) The U.S. would welcome European involvement to protect its interests in Latin America.

Monroe Doctrine

A U.S. foreign policy principle set forth in 1823, proclaiming opposition to European colonialism in the Americas.

North and South America

Denotes the two continents making up the Americas, with North America including countries like the United States and Canada, and South America comprising countries like Brazil and Argentina.

Foreign Countries

Nations outside of one's own, often referenced in the context of international relations, trade, or travel.