Smoke Signals (7 avr. 150 av. J.-C. – 1 janv. 1918)
Description:
The earliest form of long-distance communication generally used to alert others of impending enemies. These were used by China and by Indigenous North Americans.Ajouté au bande de temps:
Date:
7 avr. 150 av. J.-C.
1 janv. 1918
~ 2069 years
