USA HISTORY

Detailed explanation-1: -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-2: -Monroe’s greatest achievement as a diplomat was his negotiation of the Louisiana Purchase in 1803. Elected President of the United States in 1816 and in 1820, James Monroe resolved long-standing grievances with the British, acquired Florida from Spain in 1819, and proclaimed the “Monroe Doctrine” in 1823.

Detailed explanation-3: -The Monroe Doctrine was drafted because the U.S. government was worried that European powers would encroach on the U.S. sphere of influence by carving out colonial territories in the Americas.