The first atomic bomb was dropped on Hiroshima, on August 6, 1945. The world would never be the same. This paper will discuss the significance of the atomic bombs dropped on Hiroshima and Nagasaki and how they led to the success of the Allied forces. It will also discuss how the United States developed the atomic bomb, the decision to drop the bomb, the weakening of Japan, the actual bombing and destruction of cities, the surrender of Japan and the impact the atomic bomb would have in the future. During World War II, the United States was afraid that Germany would develop the atomic bomb first. Germany had taken over Norway, which was a heavy water supply and Czechoslovakia, which wa