It is known that the United States possesses three types of weapons of mass destruction: nuclear weapons, chemical weapons and biological weapons. The USA. It is the only country that has used nuclear weapons in combat. The USA. He also used chemical weapons in the First World War, in the Vietnam War and in the Iraq War. He had secretly developed the oldest form of the atomic bomb during the 1940s under the title "Manhattan Project". The United States pioneered both the development of the nuclear fission bomb, and the hydrogen (nuclear fusion). It was the first nuclear power and unique in the world for several years ahead of the Soviet Union.
