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Before there was communication through hieroglyphs but they began to breed pigeons and called them carrier pigeons. -
Homing pigeons were used to carry messages from one place to another, but the heliograph was created, they used it to make telegraphic signals through the reflection of the sun's rays in a mirror. -
The heliograph was used until Ts'ai Lun, a dignitary of the Chinese imperial court, began to produce paper with scraps of cloth and tree bark. -
Then the paper was used to create newspapers that people could read for information and in 1837 Samuel Morse and Alfred Vail created the Morse code, it worked by means of dots and lines. -
Morse code was used as a means of communication and to send secret messages, then Alexander Graham Bell created the first phone with this one, people could communicate more easily, the only problem is that they were very large. -
The telephone was one of the best inventions and we still use it but John Logie Baird created the television this was very large and its screen was very small but over time the screen has become bigger