How did radio smooth out regional differences?

A Americans from coast to coast could listen to the exact same programming.

B Americans were able to buy what everyone else wanted.

C Americans were able to hear their President live for the first time

D Americans were able to travel more easily with newer technology.

The correct answer is option A.  Americans from coast to coast could listen to the exact same programming.

Explanation:

Radio was huge invention in America. It allowed people from different regions to listen to the same programs at the same time. It also reduced distances among them because it allowed people to smooth out their differences related to language, dialect, music and also the taste of the customers. In addition, radio also had a part in transforming the way the people enjoyed sports and other entertainment.  

Thank you for asking.

the congress realized that action had to be.