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