6. What was V-J Day? What caused this day to happened?

Answer:
On August 15, 1945, news of the surrender was announced to the world. This sparked spontaneous celebrations over the final ending of World War II. On September 2, 1945, a formal surrender ceremony was held in Tokyo Bay aboard the USS Missouri. At the time, President Truman declared September 2 to be VJ Day.
Explanation:
On August 15, 1945, news of the surrender was announced to the world. This sparked spontaneous celebrations over the final ending of World War II. On September 2, 1945, a formal surrender ceremony was held in Tokyo Bay aboard the USS Missouri. At the time, President Truman declared September 2 to be VJ Day.