Following the invention of paper in ancient China in 105 AD, the development of human civilization was involved in the information revolution . From the first codex written on parchment in the fourth century AD to the more recent Twitter on the Internet, the means of sharing information have undergone a radical change. Indeed, technological innovation has played an important role in the development of mass media. The following essay will discuss major media trends that were driven by the invention of new technologies and how new technology would create a restructuring of the political and economic system between the mid-15th century and the 2010s in America. textbook, the author Starr presented the path of development of American mass communication, which began with the postal service and the publication of newspapers, then the development of the telegraph and telephone, later the advent of cinema, broadcasting and the entire repertoire of mass communication (Starr p. 3). It was clear that every turn in the development of mass communication was associated with the innovation of a new technology. In the mid-1450s AD, Johannes Gutenberg invented movable metal typography, which directly established the commercial organization of printing as well as as a capitalist framework in the book trade. According to the first lecture note in the first unit, before Gutenberg's time, the rise of handmade manuscripts created a commercial condition for printing. However, the emergence of movable type system has a faster production process compared to the duration of handwritten or wood block printing due to the limited efficiency of the En...... middle paper ......e radio manufacturer was located at Westinghouse in Pittsburgh; and in 1920, Westinghouse's new Pittsburgh station, KDKA, broadcast the results of the presidential election, which represented the beginning of American broadcasting history with the radio medium. Based on Starr's Chapter 10 of Unit Four, from 1922 to 1925 the number of radio receivers increased to approximately 2.75 million, and the proportion of American households equipped with radios increased from 0.2 at 10.1 percent (Starr p. 335). Additionally, during the Great Depression, radio served political purposes; for example, Franklin Roosevelt broadcast his election in 1932 and gave a radio speech about the banking crisis in 1933 (Unit Four Lecture Note). Therefore, state-of-the-art broadcasting significantly influenced the political development of American mass media history..