Silent films were popular in this decade, with the highest-grossing film of this decade being either the American silent epic adventure-drama film Ben-Hur: A Tale of the Christ or the American silent war drama film The Big Parade, depending on the metrics used. Sinclair Lewis was a popular author in the United States in the 1920s, with his books Main Street and Elmer Gantry becoming best-sellers. Best-selling books outside the US included the Czech book The Good Soldier Švejk, which sold 20 million copies. Songs of this decade included "Mack the Knife" and "Tiptoe Through the Tulips".
Silent films were popular in this decade, with the highest-grossing film of this decade being either the American silent epic adventure-drama film Ben-Hur: A Tale of the Christ or the American silent war drama film The Big Parade, depending on the metrics used. Sinclair Lewis was a popular author in the United States in the 1920s, with his books Main Street and Elmer Gantry becoming best-sellers. Best-selling books outside the US included the Czech book The Good Soldier Švejk, which sold 20 million copies. Songs of this decade included "Mack the Knife" and "Tiptoe Through the Tulips".