Because the Japanese would not surrender to the US. The US needed a show of power and the two atomic bombs were the solution. The US claimed they had more, to frighten the Japanese into surrendering, but they really didn't have any more.
It was used in the world war two, its an atomic bomb!
Atomic bomb
The Atomic bomb .
Fission.
at the end of the world war (WW2) the atomic bomb was used on Hiroshima and Nagasaki. After WW2 the atomic bomb was further developed and "was used as a silent threat against USSR" until 1949 when they had their own atomic bomb. From that year there was an arms race which played a major part in the Cold War
Atomic Bomb
YES!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The world was going through world war two. The atomic bomb ended the war.
The Atomic bomb or A-bomb was used to bomb Japan at the end of WWII
To end World War 2.
The Atomic Bomb
The atomic bomb has been tested in many parts of the world but it was used as a weapon in World War II when one each was dropped on the cities of Hiroshima and Nagasaki, Japan.