What was the main cause of hostility between the u. s. and cuba during the cold war?

Fidel Castro allowes the Soviets to put nukes in Cuba which could hit mainland america something that fightend america so they formed a blockade and hit Cuba with sanctions

i r r e l e v a n t

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.