The correct answer among all the other choice is D. U.S. naval blockade of Cuba. This event resulted in the greatest threat of nuclear war. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
Which "side" a country joined was mostly due to which side of the iron curtain they were on, which also determined how close they were to the USSR and how much influence the USSR could have over them
Clinton ended up sending a peacekeeping force of 20,000 American troops (part of a larger NATO deployment) where they went into the region to enforce a cease-fire that was to be followed by the people