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Smoke Signals (1 ene 150 año aC – 1 ene 500 año)

Descripción:

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.

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Technology Timeline

ByEdward Zhong
11 nov 2018
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0
369

fecha:

1 ene 150 año aC
1 ene 500 año
~ 650 years
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