Answer :
Final answer:
Hitler's betrayal of the nonaggression pact with Stalin and the consequences of his invasion of the Soviet Union in June 1941.
Explanation:
Hitler's invasion of the Soviet Union in June 1941 marked a significant turning point in World War II. This invasion, known as Operation Barbarossa, was Hitler's betrayal of the nonaggression pact with Stalin and led to a brutal conflict on the Eastern Front. Despite initial successes, the invasion ultimately resulted in a devastating defeat for Germany.
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