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jan 1, 105 BC - Smoke Signals
Description:
The smoke signal is one of the earliest forms of long distance communication; generally used to transmit news, signal danger or gather people to a common area.
Added to timeline:
The rapid rate of technology change
By
Georgiana Haywood
13 Nov 2018
0
0
397
Date:
jan 1, 105 BC
Now
~ 2132 years ago
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