What significant national event took place on December 7, 1941?

December 7, 1941, is notably recognized for the bombing of Pearl Harbor, which was a pivotal event in American history. This surprise military strike by the Imperial Japanese Navy against the United States naval base at Pearl Harbor, Hawaii, led directly to the U.S. entering World War II. The attack resulted in significant losses, including the destruction of numerous ships and aircraft, and it prompted President Franklin D. Roosevelt to declare war on Japan the following day, marking a turning point in the war. This event is frequently remembered as "a date which will live in infamy" due to its unexpected nature and the profound impact it had on the course of history. Other options, such as the end of World War II, the signing of the Constitution, and the start of the Vietnam War, occurred at different times and are unrelated to this specific date, making them incorrect in this context.