One of the Principal Effects of the Monroe Doctrine Was

One of the principal effects of the Monroe Doctrine was

A) to give the United States a sense of responsibility for international affairs.
B) to establish one of the central fixed principles of American foreign policy.
C) to establish closer relations between the United States and Latin America.
D) to contribute to the American sense of deepening isolationism from world affairs.
E) to provide an effective check against any new European imperialism in the Americas.