1 janv. 700000 av. J.-C. - FIRE
Description:
Groups or individuals used this to communicate the need for assistance or to share information about important events. Smoke signals were especially useful as a tracking tool. In a time before maps existed, groups moving from one location to another could follow each other by following “directions” made from smoke.Ajouté au bande de temps:
Date:
1 janv. 700000 av. J.-C.
Maintenaint
~ Il y a 702490 ans
