Answer:
This emerging industry that benefited from the prosperity of the 1950s was the advertising industry.
Explanation:
As people bought more and more TVs and it became a "must-have" in every house, TV became a prolific way to enter everybody's houses. It started in the 50s the boom of the mass media.
The advertising industry grew as the consumer goods industry grew and how a product was advertised became important to the commercial success of it.
