Respuesta :
The correct answer is C) The American continents were closed to European colonization.
The Monroe Doctrine, established by president James Monroe, was a significant foreign policy during the early part of the 19th century. At this time, Monroe felt that European intervention in North America caused nothing but problems. This is why he developed the Monroe Doctrine.
Monroe proclaimed that no new colonization efforts can be taken by European countries in the Western Hemisphere. The United States would honor the already established colonies but wanted no new colonization of the Western Hemisphere. Any new attempts to colonize in the Western Hemisphere would be interepreted as a hostile act and would result in America responding accordingly.