The correct answer to this open question is the following.
The dominant forms of media present in the United States during the Industrial Revolution was the telegraph and the printed press. Basically, the printed press, the newspaper, was the most important media slot of that time. United States citizens read the news to know what was going on in the country during that important time of changes and transformations.
During World War I and II, the printed press played animportant role, but the Radio was the novel mass media development that caused a sensation in World War II. Entire families gathered around the Radio device to listen to the breaking news of the time and know more about the US troops at the war front.