Question

in the 1970s, the shah of iran was
returned to power by the cia.
overthrown and sent into exile.
replaced with his son mohammad.
given power and took control of iran.

Explanation:

The 1979 Iranian Revolution resulted in the overthrow of Shah Mohammad Reza Pahlavi, who was then forced into exile. The CIA-backed return of the shah occurred in the 1950s, not the 1970s, and he was not replaced by his son nor newly given power in this decade.

Answer:

overthrown and sent into exile.