jan 1, 700000 BC - 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.Added to timeline:
Date:
jan 1, 700000 BC
Now
~ 702492 years ago