Question

What made Japan surrender to the Allies in August 1945?

Answer 1

Hint: The incident which was the reason why Japan surrendered to the Allies involved two cities in Japan - Hiroshima and Nagasaki. The incident that took place led to Japan witnessing a huge number of casualties.

Complete answer: Japanese Emperor Hirohito on August 15 announced the surrender of Imperial Japan and it was formally signed on September 2, 1945. Once the signing was done the hostilities of world war 2 came to an end.
On August 6, 1945, an atomic bomb was denoted by the United States over the Japanese city of Hiroshima. Some days later the United States dropped another atomic bomb on the Japanese city of Nagasaki.
During the same time, the Soviet Union had invaded the puppet state established by Imperial Japanese in Manchukuo. The bombing of Nagasaki happened just hours after the invasion of the Soviet Union.
The Supreme Commander for the Allied Powers began the occupation of Japan on August 28. The public reaction to the surrender was varied, some people went on with their lives whereas some army and navy officers committed suicide.
Suzuki was replaced as the prime minister by the uncle of the Emperor, Prince Higashikuni, on August 17. The formal surrender occurred on $2^{nd}$ September when the representatives from the Empire of Japan signed the Japanese Instrument of Surrender. The foreign minister of Japan signed for the Japanese government whereas Gen Umezu signed for the Japanese armed forces.

Note: World war 2 began from 1939 and lasted till 1945. The result of the war was the victory of the allied forces. The main Allied leaders were Joseph Stalin, Franklin D Roosevelt, Winston Churchill and Chiang Kai Shek.