What school's research on immigration and media opened the curtain of American communication studies?

As an early American sociologist, Chicago School's contribution to communication theory has certain enlightenment to today's communication scholars. Chicago School plays an important role in American communication studies. Dewey, Cooley, Parker and Meade are the representatives of Chicago School and the theoretical source of American communication.

The United States of America (hereinafter referred to as the United States) is a federal constitutional country, which consists of Washington, D.C., 50 states, Guam and many other overseas territories. The land area is 9.37 million square kilometers (plus the Great Lakes and coastal waters such as estuaries, harbors and inland seas that the United States has sovereignty over).