How is the Iranian revolution related to a US military action to stop the spread of communism?

The Iranian Revolution known as the Islamic Revolution was a series of events that culminated in the overthrow of the Pahlavi dynasty under Shah Mohammad Reza Pahlavi, and the replacement of his government

Explanation:

  the common sense as a pamphlet written by thomas paine. it promoted the independence of the colonies from british rule. the distribution of this pamphlet was great, it reached people everywhere and it was even read aloud at places people met. it also unite the colonists before the revolutionary war.

answer is d