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1 janv. 150 av. J.-C. - smoke signals invented

Description:

smoke signals were used to signal danger, gatherings or news

Ajouté au bande de temps:

timeline for communication

Byashley gremmo

12 nov. 2018

0

0

283

Date:

1 janv. 150 av. J.-C.

Maintenaint

~ Il y a 2177 ans

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