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Photography
Photography was invented in the 1820s -
Telegraph
The telegraph invented in the 1830s and use by the late 1840s -
Phonograph
The phonograph was invented in 1877 -
Recording
Sales of recordings which mass proportions during the 1920s -
Radio station
The first to US commercial radio station on the air in 1920 -
Radio network
Radio networks were first established in 1927 -
Television
During the 1950s broadcast television emerged as the nexus of the mass media -
Online services
The 1990s were marked by explosive Growth Inn online services for people who use computers as well public access to the Internet -
Silent Movies
Silent movies became popular during the early 20th century -
Mass media
By the 21st-century the familiar influence of mass media reasserted itself heavily in the online world