- Who: U.S., Russia, Great Britain, France, and China.
- Where: the five countries.
- nuclear fusion of hydrogen isotopes.
- the light elements are made heavier.
- these countries formed the nuclear club.
- many layers of the bomb
- many countries claimed the capability of being able to create he h bomb but never did.
- only 2 nuclear weapons have been used in war, both by the US.
- many have been detonated for testing purposes.
- there is an estamate of more than 20,500 bombs in the world now.
sources: infoplease.com
