Why do some people think preventative detention is unfair? because people are punished for a crime after a trial because people are punished unfairly for a crime because jail conditions are often very poor because people are punished for a crime before a trial

I believe it is D. If they are being held for a crime they didn't commit, without a trial, then they are being held for something they didn't do.

The answer is Soviet missiles found in Cuba.

Explanation:

Also known as the Cuban missile crisis, the tension intensified that when the USA found Russia's plan to locate nuclear missile in Cuba, Russia's new found ally in the North America.

This would be a highly dangerous threat to the US National security as Cuba is only a few Kilometers away from the US Mainland. Moreover, if this happened, it would have given a strategic political and military advantage to the Soviets over USA in world politics and conflicts.