Date
Ancient Greeks developed sophisticated long-distance communication, using sound such as whistle, notably the hydraulic telegraph (Aeneas Tacticus, 4th Century BC) for coded messages via water levels in linked jars, and fire/smoke signals (Fryktories) for rapid alerts, using towers for visual relays, alongside physical couriers (runners) and carrier pigeons for messages, revolutionizing military strategy and information sharing.
Duration
0:59:29
Subtitles
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