Which of the following explains why the Soviet Union agreed to sign a non-aggression pact with Germany, which allowed the German army to march on Poland?

A.
It felt pressured to do so by France.

B.
It was planning to invade Germany anyway.

C.
It was promised portions of Poland.

D.
It was concerned about the United States.

C. It was promised portions of Poland. The Soviet Union signed the non-aggression pact with Germany in August 1939, which included a secret protocol that divided Eastern Europe into German and Soviet spheres of influence. The Soviet Union was promised a share of Poland in this agreement.