Question

How would I summarize the effect of WWII on the spread of communism?

Answer 1

In general, World War II greatly aided in the spread of communism because the one of the three main victorious allies was Russia, meaning that much of the post-war landscape was at their disposal. 

Answer 2

In general, World War II greatly aided in the spread of communism because the one of the three main victorious allies was Russia, meaning that much of the post-war landscape was at their disposal.