In the early 1920s, stimulated by the economic opportunities of the roaring twenties, and later prohibition, Jewish organized crime figures such as Arnold Rothstein were controlling a wide range of criminal enterprises, including bootlegging, loansharking, gambling, and bookmaking. According to crime writer Leo Katcher, Rothstein "transformed organized crime from a thuggish activity by hoodlums into a big business, run like a corporation, with himself at the top."[3][page needed] Rothstein was allegedly responsible for fixing the 1919 World Series.[4][page needed] At the same time, the Jewish bootlegging mob known as The Purple Gang dominated the Detroit underworld during prohibition, while the Jewish Bugs and Meyer Mob operated in the Lower East Side of New York City before being absorbed into Murder, Inc. and becoming affiliates of the Italian-American Mafia.