1 magg 800 anni a. C. - Smoke Signal
Descrizione:
one of the oldest forms of long-distance communication. It is a form of visual communication used over long distance. In general smoke signals are used to transmit news, signal danger, or gather people to a common area.This was used to signal neighbouring
Aggiunto al nastro di tempo:
Data:
1 magg 800 anni a. C.
Adesso
~ 2826 years ago
