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1820 mass media
In 1820 photography was invented and methods for reproducing photographs -
1830 mass media
The telegraph was invented -
1840 mass media
The telegraph was still popular until pretty much the end of 1840 -
1863 mass media
In 1863 thus print became the first of the modern mass media -
1877 mass media
In 1877 the phonograph emerged -
Early 20th century mass media
In the early 20th century silent movies became very popular -
1920 mass media
In commercial radio was used to popularized musical genres, create hit song and more -
1927 mass media
In 1927 they linked these radio stations out to other parts of the country -
1950 mass media
In 1950 broadcast television emerged -
1990 mass media
In 1990 was marked by an explosive growth in online access to internet, emails, news group and more