Answer:
The major media types or groups that have been introduced since the beginning of the twentieth century include film, sound recordings, radio, television, personal computers, video cassettes, video games, and the Internet.Broadcast television was the dominant form of mass media. There were just three major networks, and they controlled over 90 percent of the news programs, live events, and sitcoms viewed by Americans.In the late 20th century, mass media could be classified into eight mass media industries: books, the Internet, magazines, movies, newspapers, radio, recordings, and television.The second half of the 20th century included a huge increase in forms of media available,
including radio, cinema, television, and the Internet. But some form of mass communication has
always been a part of U.S. history. What were the dominant forms of media present in the United
States during the Industrial Revolution? World Wars I and II? Other important historical eras?
How did these forms of media differ from the ones we have today? How did they help shape the
way people interacted with and understood the world they lived in? How does mass
communication differ from mass media?
