There are several causes of the second world war, however the Russian revolution was not part of such reasons.
The failure of appeasement was one of the causes of WWII. As Hitler conquered more territories, it boosted the defence of Germany.
This proves one of the reasons through which appeasement caused WWII.
Again, the treaty of the Versailles was another cause of WWII.
The results fromthe Treaty of Versailles weakened Germany's government and that set the stage for the rise of fascism and Hitler in Germany after World War 1 which then contributed to WWII.
Another factor that led to the war was the German invasion of Poland.
Britain had given Hitler an ultimatum to withdraw from Poland but he refused.
Two days later, France and Britain declared war.
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