The National Crime Syndicate was a loose coalition of organized crime groups in the United States that emerged in the 1930s. It primarily involved Italian-American and Jewish mobsters who collaborated on various illegal activities, including gambling, extortion, and drug trafficking. The syndicate aimed to control organized crime across different regions, reducing competition and increasing profits. Key figures in the National Crime Syndicate included notorious mobsters like Lucky Luciano and Meyer Lansky. The organization played a significant role in shaping the landscape of organized crime during the mid-20th century, influencing both law enforcement and public perception of criminal enterprises.