In both cities, most of the casualties were civilians. In Nagasaki, roughly 74,000 people died of the bomb and its aftereffects. That said, it is estimated that by December 1945, as many as 140,000 had died in Hiroshima by the bomb and its associated effects. In estimating the death toll from the attacks, there are several factors that make it difficult to arrive at reliable figures: inadequacies in the records given the confusion of the times, the many victims who died months or years after the bombing as a result of radiation exposure, and not least, the pressure to either exaggerate or minimize the numbers, depending upon political agenda.
Three days later, the 'Fat Man' bomb was detonated over Nagasaki.
On the morning of August 6, 1945, the United States Army Air Forces dropped the nuclear weapon 'Little Boy' on the city of Hiroshima, Japan. The mushroom cloud over Hiroshima after the dropping of “Little Boy”
