The correct option is B USA and USSR
Conflicts of national interest caused the World War II alliance between the United States and the Soviet Union to be replaced by a Cold War that lasted 45 years. Initially a dispute over the future of Europe, it grew to include confrontations around the world. A clash of very different beliefs and ideology capitalism versus communism each held with almost religious conviction formed the basis of an international power struggle with both sides vying for dominance, exploiting every opportunity for expansion anywhere in the world.