The first atomic bomb ever used against a civilian population was dropped on Hiroshima, Japan, on August 6, 1945. The city was chosen because it was a major port and a manufacturing centre for aircraft and synthetic fuel. The detonation killed 78,150 people and wounded 64,000. The downtown area was totally destroyed; tens of thousands were left homeless. On August 9, 1945, a second bomb was dropped on Nagasaki, killing 40,000 and wounding 25,000.
One week later, on August 14, 1945, Japan surrendered.
The Americans justified their action by arguing that, by abbreviating the war through the use of nuclear weapons, they saved the lives of hundreds of thousands of American and British soldiers, not to mention Japanese.