The atomic bomb had catastrophic impacts on cities in Japan during World War II, particularly in Hiroshima and Nagasaki, where it was dropped in August 1945. Hiroshima was bombed on August 6, resulting in immediate massive destruction and a death toll of around 140,000 by the end of the year. The bomb's explosion generated intense heat and radiation, causing severe injuries and long-term health effects for survivors. Nagasaki was bombed three days later, leading to similarly devastating consequences. The bombings played a crucial role in Japan's surrender and have since sparked global debate over nuclear weapons and the ethics of warfare, influencing post-war international relations.