On August 6, 1945, the United States dropped the first atomic bomb 'Little Boy' on Hiroshima, Japan. They were the 'little boys' and 'fat guys' dropped by the United States in, Hiroshima, Japan, and Nagasaki during World War II. atomic bomb As the most widely known nuclear weapon, has only been used in actual combat twice in human history. It is precisely because of this that the development and abandonment of nuclear weapons has always been a subject of greater international controversy. With its devastating lethality, it has become a nightmare for mankind and has been subject to many doubts and criticisms, but at the same time it acts as a protective umbrella for mankind, restraining the outbreak of world-class wars with its own deterrent. Nuclear weapons have been destined to be a focus of attention since they came out. World War II nuclear weapons was used for the first time