Muhammad Ali was an iconic American boxer and social activist. Known for his charismatic personality and powerful boxing style, Ali became the first fighter to win the world heavyweight championship three times. He was born Cassius Marcellus Clay Jr. on January 17, 1942, in Louisville, Kentucky. Ali began boxing at the age of 12 and quickly rose through the amateur ranks, winning a gold medal in the light heavyweight division at the 1960 Rome Olympics. He turned professional shortly after and gained fame for his unorthodox style and brash confidence, famously proclaiming, "I am the greatest!". In 1964, after defeating Sonny Liston to win his first heavyweight title, Ali announced his conversion to Islam and changed his name from Cassius Clay. His refusal to be drafted into the U.S. Army during the Vietnam War, citing religious beliefs, led to his suspension from boxing and the stripping of his titles. He returned to the ring in 1970 and reclaimed the heavyweight title in 1974 by defeating George Foreman in the legendary "Rumble in the Jungle". Ali’s career was marked by several historic bouts, including his trilogy with Joe Frazier. Beyond boxing, he was a vocal advocate for civil rights and humanitarian causes. Ali passed away on June 3, 2016, in Scottsdale, Arizona. His legacy endures as one of the greatest athletes and cultural icons of the 20th century.