When was smoke signals invented?

Answer 1

Smoke signals were used when tribes or groups needed to send a long distant message. No one really knows when Smoke Signals were first used but they do know that around 150 A.D, the Greeks made an alphabet for the smoke signals.

Answer 2

The smoke signal is one of the oldest forms of long-distance communication. Around 150 BC, Polybius, a Greek historian, came up with the complex system by converting Greek alphabetic characters into numeric characters.

Answer 3

amercian indians