The Start of World War 2 For the United States World War II was a war that everyone will remember and will be remembered for many years to come. It could even be said that it killed more people, destroyed more property, and had far more reaching effects than any other war in history. New technologies were used in the war, such as the Atomic bomb, which opened up the nuclear age. Pearl Harbor was one of those events that will never be forgotten by Americans. Pearl Harbor was especially memorable to America because that caused us to get involved in the war and it outraged everyone in