Ruhollah Khomeini was an Iranian religious leader and politician who played a key role in the Iranian Revolution of 1979. He became the Supreme Leader of Iran after the overthrow of the Pahlavi dynasty, which had ruled the country for decades. Khomeini's leadership marked the establishment of an Islamic Republic, where laws were based on Islamic principles. Khomeini was born on September 24, 1902, in Khomein, Iran. He was a prominent Shia cleric and philosopher, known for his writings on Islamic governance. His influence extended beyond Iran, inspiring various Islamic movements around the world. Khomeini passed away on June 3, 1989.