Explain the origins of Cold War competition between the U.S. and the Soviet Union. (which option is correct)
Cold War competition began between the U.S. and the Soviet Union right at the beginning of the Korean War, when its alliance unraveled.
Cold War competition began between the U.S. and the Soviet Union right after the end of World War II, when its alliance unraveled.
Cold War competition began between the U.S. and the Soviet Union right at the start of World War II, when its alliance unraveled.
Cold War competition began between the U.S. and the Soviet Union right after the end of the Vietnam War, once the U.S. had retreated from the country.
The correct option is:
Cold War competition began between the U.S. and the Soviet Union right after the end of World War II, when its alliance unraveled.