Final answer:
The move from radio to television in the late 1940s impacted which artists became popular and which did not.
Step-by-step explanation:
The entertainment industry's move from radio to television in the late 1940s had a significant impact on which artists became popular and which did not. Prior to television, radio was the main medium for broadcasting music and popular culture. With the advent of television, artists who were visually appealing and had stage presence gained an advantage in becoming popular.
Television allowed viewers to see and connect with the artists on a visual level, which added a new dimension to their popularity. Artists who could engage and captivate the audience through their performances had a higher chance of gaining popularity and success.
An example of this is Elvis Presley, who became a major icon of rock and roll after his appearances on TV shows like The Ed Sullivan Show. His charismatic stage presence and unique style made him a sensation among teenagers across the country.