Harry Truman was a relatively unknown politician from Missouri who suddenly found himself president of the United States. Of all the men who held the office, he was probably the least prepared. Yet Truman would be the one to lead America during an era of tremendous growth and change, as it emerged from World War II. He ended the war with Germany and Japan, made the decision to use the atomic bomb, confronted the Soviet Union, waged war in Korea, and proposed changes in civil rights. Learn more with this teacher's guide from American Experience: "Truman."