Explanation

Muhammad Ali was one of the greatest boxers in history, the first fighter to win the world heavyweight championship on three separate occasions. In addition, he was known for his social message of black pride and black resistance to white domination and for refusing induction into the U.S. Army during the Vietnam War. Muhammad Ali (born January 17, 1942, Louisville, Kentucky, U.S.—died June 3, 2016, Scottsdale, Arizona) was an American professional boxer and social activist. Ali was the first fighter to win the world heavyweight championship on three separate occasions; he successfully defended this title 19 times.