【单选题】The penny press, which emerged in the United States during the 1830's, was a powerful agent of mass communication. These newspapers were little dailies, generally four pages in length, writ ten for th...
A.
The penny press was modeled on earlier papers.
B.
The press in the nineth century reached only a small proportion of the population,
C.
The penny press became an important way of disseminating information in the first half of the nineth century.
D.
The penny press focused mainly on ysis of polities.