Which of the following was the cause of the cuban missile crisis? a. china was sending troops to cuba. b. germany was starting the third reich again in cuba. c. us spy planes saw missiles being built in cuba. d. violence that irrupted it in panama canal.

Explanation:

It began when the Soviet Union (USSR) began building missile sites in Cuba in 1962. Together with the earlier Berlin Blockade, this crisis is seen as one of the most important confrontations of the Cold War. ... In October 1962, American ships blocked Soviet ships carrying missiles from going into Cuba.