To protect the country that made them or most countries use it to gain more protection of other contries or to threaten other countries. :)
They were made by the United States during WW2.
40,000
The nuclear material used to make the bombs was from Oak Ridge TN
there were two types of nuclear bombs. A "gun type" bomb and an implosion type one with a plutonium core
Yes because the American bomber aircraft dropped two atomic bombs in Japan but now the atomic bombs are called nuclear bombs, the first nuclear weapon was ever invented.
Uranium, plutonium or hydrogen.
They were made by the United States during WW2.
Some bombs are nuclear. But most bombs are not nuclear.
40,000
Nuclear bombs are made of highly enriched uranium or plutonium. These materials undergo a nuclear fission chain reaction, releasing enormous amounts of energy in the form of heat and radiation, resulting in a powerful explosion. Additionally, nuclear bombs contain conventional high explosive materials to trigger the nuclear reaction and amplify the blast.
Nuclear bombs can use either nuclear fission or nuclear fusion as the primary mechanism of energy release. Most nuclear bombs in current arsenals rely on nuclear fission reactions, while thermonuclear bombs use a fission reaction to trigger a fusion reaction.
Never, at least not yet.
china,russia,usa,uk!......
None, the US currently only refurbishes existing bombs.
The nuclear material used to make the bombs was from Oak Ridge TN
Beacause millions of lives were taken by the nuclear bombs
No, China has several hundred nuclear bombs and has had bombs since 1964.