The document discusses top advertising agencies in India and worldwide. JWT, Mudra, Rediffusion, O&M, and FCB Ulka are listed as top agencies in India. JWT is described as a full-service global agency with over 200 offices and 10,000 employees. Mudra Group covers over 1.75 lakh villages across India with 1,100 employees. Rediffusion was founded in 1973 and is now part of the Y&R network. O&M India focuses on advertising, PR, direct marketing and has specialized divisions for various sectors. Creativity is highlighted as key to an agency's success.