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May 1, 2025
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Smoke Signals (jan 1, 150 BC – jan 1, 500)

Description:

For a long time, smoke signals were the best way to send messages from far distances. In 150 BC the Greeks used a system of smoke signals that could mean alphabetical symbols when using the smoke.

Added to timeline:

Date:

jan 1, 150 BC
jan 1, 500
~ 650 years