After Hitler ordered a German invasion of Poland in 1939, Stalin followed by ordering a Soviet invasion of which country?

A. Finland

B. Romania

C. Bulgaria

D. Afghanistan

The correct answer is A. Finland.

The Soviet Union, under the control of Josef Stalin, was completed on November 30, 1939.

The Soviet Union does not invade the countries of Romania and Bulgaria until 1944.

The Soviet Union does not invade the country of Afghanistan until December of 1979.