A nuclear bomb has never been dropped. It was an atomic bomb that was dropped on the Japanese cities Hiroshima ans Nagasaki. An atomic bomb is a nuclear weapon. Nuclear bombs have much more impact than atomic bombs, and could potentially end the World if a nuclear war was started.
The first Japanese city to be attacked by a nuclear weapon is Hiroshima.
Atom bomb dropped in Japan by the U.S. during WWII
The Little Boy bomb dropped on Hiroshima, Japan on August 6, 1942.
There was no reason as it was never dropped in world war one. The nuclear era was achieved in august 6, 1945 with the first nuclear bomb dropped over Hiroshima. There was also another dropped over Nagasaki on august 9, 1945.
To end WWII.
Truman
1945 USA dropped 2 on Japan
The first nuclear explosive tested was code named Gadget. July 16, 1945.The first nuclear bomb dropped was code named Little Boy. August 6, 1945.It remains unknown when the first atom bomb was created.
The first nuclear bomb dropped in war was used by the US and killed ~100,000 in Hiroshima. About the same as died in ONE 500 to 1000 plane firebombing raid, several of which were happening every night at the same time.
That was a nuclear bomb and not an automatic bomb. It was dropped on August 9,1945.
In the test bomb, the material was plutonium. Plutonium was also used in one of the bombs dropped on Japan, Fat Man. Little Boy, the bomb dropped on Nagasaki, was made of uranium.