Answer:
World War II between the United States and the Soviet Union and their respective allies.
Explanation:
Missiles: Soviets developed ICBM could reach U.S. and carried nuclear weapons, space, CIA used U-2 aircraft that flew so high they couldn't be shot down but was shot down in 1960<span>
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The correct answer for the question that is being presented above is this one: " Mexican-american war and the California joining the union as a state." The two events that fueled the debate over slavery between 1846-1850 are the Mexican-american war and the <span>California joining the union as a state.</span>
Is that the full question?