Why did the cuban missile crisis start and why did it end? i need to write a paragraph about what cause the cuban missile crisis and why did it happen!

The Cuban Missile was a consequence if increased hostilities between the US and The Soviet Union (The US attacked the Bay of Pigs and the Soviet Union installed Nuclear weapons in Cuba as a response and this led to the Crisis -the Us was worried about Nuclear weapons so close.)

It ended by negotiations between the two parties -US promised to not attack Cuba and Soviet Union removed the weapons.