Final answer:
The Great Man Theory argues that great individuals shape significant historical events. In the context of World War II, Adolf Hitler's actions were considered a significant factor in starting the war.
Step-by-step explanation:
The Great Man Theory argues that significant historical events are the result of great individuals and their actions. Applying this theory to the question, the theory would attribute the start of World War II to Adolf Hitler. As the leader of Nazi Germany, Hitler's aggression and expansionist policies played a crucial role in triggering the war.
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