The excerpt showed that the historical factor that shaped Truman's point of view was C. the aggression of an enemy.
When Truman was deciding if to drop the atomic bomb on Japan in WWII, he considered several factors including historical ones.
He pointed to the fact that aggressive enemies such as the Japanese, would fight savagely and cause American casualties in the hundreds of thousands which he did not want.
Find out more on Truman's atomic bomb decision at https://brainly.com/question/13848876
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