Final answer:
The Ed Sullivan Show introduced more than 10,000 performers before it was canceled in 1971.
Step-by-step explanation:
The television program that introduced more than 10,000 performers to the American market before it was canceled in 1971 was The Ed Sullivan Show. This variety show aired from 1948 to 1971 and featured a wide range of talents, including musicians, comedians, actors, dancers, and more.
Learn more about Television programs that introduced performers to the American market