Original sentence: Ozark Jubilee was an Americam network television and radio variety program during the 1950s which helped popularize country music in the United States and launched or advanced the careers of many significant recording artists including Brenda Lee, Wanda Jackson, Sonny James, Porter Wagoner and Jean Shepard
Edited sentence: Ozark Jubilee was an influential network television and radio variety program during the 1950s which helped popularize country music in the United States and launched or advanced the careers of many significant recording artists including Brenda Lee, Wanda Jackson, Sonny James, Porter Wagoner and Jean Shepard