Communication

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Cave man times
3000 years Ago....
During the 1840's
During the cave man time people used smoke from fire to reach out to people living in long distances.
During the 1870's....
Almost three thousand years ago people started writing letters and pigeons were used to send messages to long distances.
During the 1900's
During the 1840's the telegraph was invented to communicate to log distances. It is a system for transmitting messages from a distance along a wire, especially one creating signals by making and breaking an electrical connection.
The 21st century
During the 1870's the telephone was invented.a system for transmitting voices over a distance using wire or radio, by converting acoustic vibrations to electrical signals.
During the 1900's the television and the push button phones were invented. The Television was used for entertainment and media. The push button phones for communication.
In today's time people have invented smart TVs and smart phones.

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