Answer :
"declare war on Japan once the Nazis were defeated" is the correct answer regarding what Stalin agreed to do in return for the Allied invasion of France.
Answer:
In return for the Allied invasion of France, Stalin agreed to declare war on Japan once the Nazis were defeated.
Explanation:
On June 22, 1941, Germany and its allies, except Japan, started a war against the USSR, and on December 7 of that year, Japan attacked the United States, starting a war in the Pacific Ocean. At the same time, Japan did not abandon the thought of aggression against the USSR.
In February 1945, at the Yalta Conference, the leaders of the Allied countries, Stalin, Roosevelt and Churchill, signed an agreement according to which the USSR undertook to enter the war on the side of the Allies against Japan 2 or 3 months after the surrender of Germany and the end of the war in Europe, subject to the return of the southern part of the USSR Sakhalin and the transfer of the Kuril Islands.
By mid-March 1945, Japan was not doing very well in the Pacific, and they withdrew their elite troops from Manchuria to support operations in the Pacific. Meanwhile, the USSR continued to build up the grouping of troops in the Far East. The terms of the Neutrality Pact stipulated that the USSR should notify Japan about this 12 months before its termination. On April 5, 1945, the USSR notified Japan that they did not want to extend the Neutrality Pact. This caused considerable concern for the Japanese side, but the USSR assured the Japanese that the neutrality pact would be valid for another twelve months as established by the terms of the pact, and that the Japanese had nothing to worry about.
In the declaration adopted at the Potsdam Conference on July 26, 1945, the United States, Great Britain and China demanded unconditional surrender of Japan, and in case of failure to comply with the conditions of the declaration, they threatened to "demolish Japan." That same summer, Japan tried to negotiate with the USSR on mediation, but to no avail.
The war was declared exactly 3 months after the victory of the Allied countries in Europe, on August 8, 1945, two days after the atomic bombing of Hiroshima and on the eve of the atomic strike on Nagasaki.
