Clues: The Prohibition Amendment is ratified; the American Communist Party is established; Soviet forces occupy Ukraine; Romania annexes Transylvania; Reds over the Black Sox in the World Series; Teddy Roosevelt & Andrew Carnegie die; and J.D. Salinger and Jackie Robinson are born.
1920s prohibition posters: In 1920, Prohibition goes into effect with the passage of the 18th Amendment. Organized crime started to gain momentum as Mobsters such as Al Capone and Dutch Schultz began importing illegal alcohol and selling it to a public more than willing to break the law. An age of outlaw glamour and speakeasies continued for almost a decade.