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D. Castro started manufacturing hydrogen bombs with the help of communist China.</span>
Well, kind of?
But I'd go with False.
The Cuban Missile Crisis was started by the photographs taken by the U-2 spy plane but the real issue was that Cuba was building missile launching pads and the Soviet Union was supplying them with those missiles.
The US ended up blockading Cuba to keep the Soviet ships from arriving in Cuba.
The correct answer is A. Salt mines in the Sahara desert
Salt was extremely important at that time and was even used as currency often because it was expensive.
