Smoke Signals (jan 1, 1800 BC – dec 31, 500)
Description:
Smoke Signals were used as the main form of communication if over a long distance. In 150BC, the greeks created a system of alphabetic characters and converted it into numeric characters so they were able to communicate it over torch smoke singals.Added to timeline:
Date:
jan 1, 1800 BC
dec 31, 500
~ 2302 years