How the Prohibition law of 1920 made alcohol, savored in secret, all the more delectable when the cocktail shaker was forced to go “underground”. “Roaring Twenties” America boasted famous firsts: women’s right to vote, jazz music, talking motion pictures, flapper fashions, and wondrous new devices like the safety razor and the electric vacuum cleaner. The privations of the Great War were over, and Wall Street boomed.