Little Boy, the bomb dropped on Hiroshima on 6th August 1945, was a gun-assembly fission bomb using uranium
The atomic bombings of Hiroshima were American bombing raids on the Japanese cities of Hiroshima during World War II, which marked the first use of atomic weapons in war
Japan did not want to be invaded by American forces; instead, they wanted to maintain their monarch and carry out their own war tribunal
United States’ decision to drop atomic bombs on Japan was Japan’s unwillingness to surrender unconditionally
Japan refused to surrender after multiple firebombing campaigns such as the Bombing of Tokyo on March 9–10, 1945
Firestorm caused by incendiary bombs killed at least 80,000 people, likely more than 100,000, in a single night and some one million people were left homeless
It razed and burnt around 70 per cent of all buildings and caused an estimated 140,000 deaths by the end of 1945, along with increased rates of cancer and chronic disease among the survivor