I'm curious why it was invented. Guns, tanks, and aircrafts I understand the use of it to maintain order and security but who started the idea of creating nuclear weapons. A weapon powerful enough to destroy a country in an instant and kill many lives.

Nuclear weapons shouldn't have exist in the first place as the countries that have it makes them feel they're superior and use it to gain control over other countries.



I'm surprised that Japan is not on the list even if their country is known to have an advance technology.