WORLD HISTORY

Detailed explanation-1: -Why was the Monroe Doctrine a significant foreign policy achievement during the 1820s? It brought about a gradual end to the trans-Atlantic slave trade. It gave the United States control over Spain’s South American colonies. It established the United States as a major power in the Western Hemisphere.

Detailed explanation-2: -The European powers, according to Monroe, were obligated to respect the Western Hemisphere as the United States’ sphere of interest. President James Monroe’s 1823 annual message to Congress contained the Monroe Doctrine, which warned European powers not to interfere in the affairs of the Western Hemisphere.

Detailed explanation-3: -The Monroe Doctrine subsequently contributed to the emergence of the US as a world power by early 20th century, certainly the sole power in the North and South America. The US thereafter began to play a lead role in the foreign affairs of the Americas and began influencing the European nations too.

Detailed explanation-4: -The Monroe Doctrine became a foundation piece of American foreign policy and helped solidify a new American identity to the world. In declaring the Western Hemisphere unavailable to European interference, it also warned that the United States would interpret any foreign involvement there as aggression.

Detailed explanation-5: -The Monroe Doctrine warned European powers to stay out of Western Hemisphere affairs; conversely, it reinforced the U.S.’s tradition of staying out of European affairs. The Monroe Doctrine essentially meant that the Americas should not be subject to European powers.