What significant event occurred on V-J Day?

V-J Day, or Victory over Japan Day, marks the day when Japan formally surrendered to the Allies, effectively bringing an end to World War II. This surrender occurred after the devastating effects of atomic bombings on Hiroshima and Nagasaki and was significant as it represented the conclusion of hostilities in the Pacific Theater. The formal surrender took place on September 2, 1945, when Japanese officials signed the surrender documents aboard the USS Missouri in Tokyo Bay.

The other options revolve around different historical events that occurred during World War II or related to it, but they do not pertain to the specific moment that V-J Day commemorates. The dropping of the atomic bomb on Nagasaki is a crucial event leading up to Japan's surrender, while the liberation of Paris was a key moment in the European Theater of the war. The incorrect option about the Axis powers declaring war on the US relates to earlier events in the war, specifically the attacks that prompted American entry into the conflict, rather than the conclusion of hostilities.