Khomeini, founder of the Islamic Republic, entered capital on 1 February 1979 and led an uprising throughout in homeland that resulted in victory after 10 days. The Revolution on 11 February 1979 was caused by the participation of different groups of people. The Pahlavi dynasty officially ended and finally, conditions were prepared to forming the Islamic Republic led by the cleric, Ayatollah Ruhollah Khomeini.