What did the USSR contribute to the beginning of World War 2?

Answer 1

It helped contribute to the start of World War 2.

Hitler and Stalin signed an agreement called the Nazi/Soviet Pact in 1939 and a few weeks later both Nazi Germany and communist Russia invaded Poland at the exact same time and met in the middle. This is what started WWII in Europe.

Answer 2

The USSR was complicit in the partition of Poland but there were mitigating circumstances. Stalin watched the UK and France cave in to Nazi demands time and again from the Rhineland, Austria, the Sudetenland and finally Czechoslovakia. He understood at that point that he would have to fight Hitler alone or, at best, with very weak allies. His army was in no shape to fight and he knew it. He cut a deal with Hitler and got the USSR a buffer zone while he tried to remake his army.

In other words, the USSR made moves to survive a Germany they knew was aggressive.

Answer 3

The Hitler-Stalin pact of 1939 enabled Germany to invade Slavic Poland on September 1, 1939 with impunity that Russia, the Slavic big brother that came to the defense of Serbia at the beginning of World War I, would not act to stop Germany. To the contrary, Russia grabbed some border lands from Poland. Russia's treachery was repaid in spades in 1941 when Germany invaded Russia, resulting in the deaths of tens of millions of Russians, both military and civilian.