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29 nov 201 anni a. C. - Smoke signals

Descrizione:

Smoke signals were first used in Ancient China
to alert others of danger along the Great Wall.a

Aggiunto al nastro di tempo:

Communications Timeline

ByZT

9 nov 2018

1

0

454

Data:

29 nov 201 anni a. C.

Adesso

~ 2229 years ago

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