Smoke Signals (1 janv. 150 av. J.-C. – 1 janv. 500)
Description:
For a long time, smoke signals were the best way to send messages from far distances. In 150 BC the Greeks used a system of smoke signals that could mean alphabetical symbols when using the smoke.Ajouté au bande de temps:
Date:
1 janv. 150 av. J.-C.
1 janv. 500
~ 650 years