TBWA\Chiat\Day is the American division of the advertising agency TBWA Worldwide. Created in the 1995 merger of TBWA and Chiat/Day, the agency operates offices in Los Angeles, New York City, Nashville, and Mexico City. Prior to the merger, Chiat/Day created internationally notable advertising, including "1984" for Apple Computer that introduced the Macintosh computer. The merger also inspired the creation of the ad agency St.Lukes by Chiat/Day's London office's employees.