Ayatollah Sayyed Ruhollah Mousavi Khomeini, born on September 24, 1902, in Khomein, Iran, was a key figure in the 1979 Islamic Revolution that overthrew the Shah and established the Islamic Republic. A prominent cleric and Marja, Khomeini became Iran’s Grand Leader, shaping Islamic governance through his concept of velayat-e faqih. After years in exile, he returned to Iran on February 1, 1979, to a triumphant welcome. He passed away on June 3, 1989, with his funeral attended by over ten million people. His legacy endures, influencing contemporary Islamic thought and governance.