Answer: The Soviet Union joined the Allies after being invaded by Germany. An agreement between Germany and the Soviet Union saying that they would not fight each other. Also secretly included that they would take over and split Poland. Giving into Germany to avoid war is called appeasement.
Explanation: we were just learning about this so this is was easy and you can look stuff up you know and you can word it differently so your teacher does not give you a zero. so just look it up and thin word it differently. hope this helps