Final answer:
Marji learns that Mohammad Mossadeq was the emperor overthrown by Reza Shah Pahlavi, which created conflict due to Mossadeq's policies threatening US and British business interests.
Step-by-step explanation:
Marji learns that the emperor overthrown by Reza was Mohammad Mossadeq. This adds to the conflict as Mossadeq's policies, such as nationalizing Iran's oil fields, were seen as a threat to US and British business interests. To protect these interests, the US and Britain organized a coup to overthrow Mossadeq and reinstall the pro-Western shah of Iran, Reza Shah Pahlavi.