The Monroe Doctrine asserted that the Western Hemisphere was closed to future European colonization. In what year was it proclaimed?

• A. 1803.
• B. 1812.
• C. 1845.
• D. 1823.

Answer: (D)

The question tests when the Monroe Doctrine was proclaimed, a defining statement of early U.S. foreign policy that warned European powers not to colonize or interfere in the Western Hemisphere. It was issued in 1823, when President James Monroe delivered it in his annual message to Congress on December 2, 1823. This timing matched a moment when many Latin American nations had recently gained independence, and the United States wanted to deter European recolonization while signaling that the Western Hemisphere should chart its own political future. The year 1823 is the correct one; the other dates correspond to different events in U.S. history (1803 with the Louisiana Purchase, 1812 with the War of 1812, 1845 with factors like Texas annexation).