Answer:
It started a revolution that showed the world that it was possible to overthrow an empire. It was the beginning of a push for democracy all over the world.
To help discourage Soviet communist expansion, the United States built more atomic weaponry, The arms race has produced waste from such sources as the reactors that make the plutonium and tritium, the tailings from uranium mining, and other by-products from the nuclear weapons development process. As more nuclear weapons are removed, the safe storage of their warheads becomes increasingly more urgent
I think it is the third one hope that helps