During World War 2, the United States finished making them. They were first to have a nuclear bomb and the only ones to use it againts mankind.
After USSR (mostly in asia), China.
No president invented any nuclear bomb.
Leo Szilard invented the fission bomb. Edward Teller invented the fusion bomb. Both were from Hungary.
he invented it with metal
USA
There were no nuclear weapons in WW1. The nuclear bomb was not invented until WW2.
None. The fission bomb was invented in 1933 by the physicist Leo Szilard. The staged fusion bomb was invented in 1949 by the mathematician Stan Ulam and the physicist Edward Teller.
US
Yes he was.
The Russian atomic bomb was developed under the direction of Soviet physicist Igor Kurchatov. The Soviet atomic bomb project was carried out in top secret and successfully detonated its first nuclear device in 1949, making the Soviet Union the second country to possess nuclear weapons.
No, it was invented in London in 1933 and built in Los Alamos, NM in 1945.
robert serber