Question

How did movies and the radio cut across geographic barriers?

Answer 1

These provided a way of instant worldwide connectivity.

Explanation:

As a result of the radio and television, people in Great Britain could see and hear the same thing as people in the United States, thus allowing the almost instantaneous sharing of cultures internationally, even intercontinentally. If somebody in Great Britain, continuing the example, was sharing information with somebody in the United States through radio, then important ideas and emotions could be expressed, resulting in more international understanding.