Germany's invasion of the Soviet Union led to

Germany launched a surprise attack against the Soviet Union, its ally in the war against Poland. By the end of the year, German troops had advanced almost 1,000 miles to the outskirts of Moscow. Soon after the invasion, mobile killing units began the mass murder of Soviet Jews.

I think it lead to WW II

Explanation:

I just finished learning about all the wars and Hitler.

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answer; basic psychology;