Smoke Signals (7 apr 150 anni a. C. – 1 gen 1918 anni)
Descrizione:
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.Aggiunto al nastro di tempo:
Data:
7 apr 150 anni a. C.
1 gen 1918 anni
~ 2069 years