William Harrison "Jack" Dempsey, nick-named Kid Blackie and The Manassa Mauler, was born in Colorado, U.S., in June 1895. He was an American professional boxer who competed from 1914 to 1927. From 1919 until 1926, he was the world heavyweight champion. Dempsey's aggressive fighting style and great punching power made him one of the most famous boxers in history, making him a cultural icon of the 1920s. Many of his fights broke attendance and financial records, including the first million-dollar gate. Here's a quiz based on Jack Dempsey.