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Emergence of cuneiform writing in Mesopotamia. -
Development of writing in different cultures (Egyptian, Chinese, Mayan, etc.).
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Oral and gestural communication. -
Johannes Gutenberg invents the movable type printing press -
Samuel Morse develops the telegraph and Morse code. -
Alexander Graham Bell patents the telephone. -
Guglielmo Marconi makes the first radio broadcasts -
Rise of commercial broadcasting. -
Development of television. -
First message sent through ARPANET, precursor to the Internet. -
Internet and email development. -
Popularization of the World Wide Web -
Expansion of social networks, instant messaging and mobile communications.