Soviet Union
Germany invaded the Soviet Union on June 22nd, 1941.
The non-aggression pact between Germany and the Soviet Union.
Operation Barbarossa was the German attack plan for the attack on the Soviet Union.
Because Hitler wanted more living spaces for the German people and he hated communism
To invade Poland; to prevent a war with the Soviet Union in 1939. (The Soviets fought the Germans from 1941-1945). It might be better asked as to why the Soviet Union signed Russian-German Non-Aggression Pact, in that the pact was a German proposal.
That Germany will get the western part of Poland (Russian territory), Russia will get the Eastern half and Germany promises not to invade Russia.
they didn't
That Hitler would not invade the Soviet Union.
The Soviet Union knew the German Nazis would invade their nation to get their raw materials, oil and land. They signed a non-aggression pact with Germany hoping to buy time and build up their forces. Then German Nazis did invade Russia and the USSR was forced into the war.
1941
The USA.