The purpose of the Monroe Doctrine was:
B to protect the United States’ independence by limiting European involvement in North and South America.
The Monroe Doctrine, announced by President James Monroe in 1823, stated that any attempted colonization or interference by European powers in the affairs of the Americas would be viewed as acts of aggression, requiring U.S. intervention. It aimed to prevent European powers from establishing new colonies or interfering with sovereign nations in the Western Hemisphere.