The Soviet Union
There was no 4th atomic bomb.
During World War II, the successful development of the atomic bomb by the United States demonstrated to the world-community the superiority of American resourcefulness and scientific know-how. It also demonstrated American superiority in a very basic military sense, as no other nation had atomic weapons at its disposal at that time.
After checking out the devastation and the sickness no other nation wanted to get in an atomic holocaust.
H-bomb
Atomic Bomb Atomic Bomb
The Soviet Union
Soviet Union
The Soviet Union
The Soviet Union
The Soviet Union
There was no 4th atomic bomb.
During World War II, the successful development of the atomic bomb by the United States demonstrated to the world-community the superiority of American resourcefulness and scientific know-how. It also demonstrated American superiority in a very basic military sense, as no other nation had atomic weapons at its disposal at that time.
The US .
Japan
He did.
The first atomic bomb was created in the USA during the Second World War (Manhattan Project).