Question: who ruled iran after the shah was deposed
Answer: Enqelāb - e Iran ; also known as the Islamic Revolution or the 1979 Revolution ) refers to events involving the overthrow of the 2,500 years of continuous Persian monarchy under Mohammad Reza Shah Pahlavi , who was supported by the United States , and eventual replacement with an Islamic Republic under the Grand Ayatollah Ruhollah Khomeini , the leader of the revolution , supported by various leftist and Islamist organizations and student movements .