Answer:
You included no options so I can only answer in my own words.
In Japan, the military rose to power because the government failed to solve the country's economic problems. In September 1931, Japan launched a surprise attack against Manchuria in China.
In 1940 Japan signed a pact of alliance with Germany and Italy.
Josef Stalin became the Communist leader of the Soviet Union.
To keep the United States out of the war, Congress passed a series of Neutrality Acts.