Why was the United States flying U-2s over the Soviet Union? A. to transport aid to South Korea
B. to spy on the Soviets
C. to track Soviet flights
D. to prepare for nuclear war

B. To spy on the Soviets

Explanation:

Alarmed over rapid developments in military technology by his Communist rivals in the USSR, President Dwight D. High-altitude U-2 spy planes began making reconnaissance flights over the USSR in 1956, giving the U.S. its first detailed look at Soviet military facilities.

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explanation:

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