What was the best way to spread information? Everything from news, gossip, and emergencies
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There is some interesting stuff in the link but to give a bit of a summary. Originally messages would travel at the speed of a human or the animal that could transport them ( or a ship at sea). But that wasn’t the limit before radio was invented because there was semaphore and telegraphy. Smoke signals were used on the Great Wall of China and by Native Americans , the Ancient Greeks used torches, the French and the English developed systems of semaphore using panels , flags , lights and shutters. The latter enabled a signal to be sent the 85 miles from London to the Portsmouth Naval base in 15 minutes. Pretty soon though telegraphy using morse code down a wire became the main form of quick long distance communication after developments in the US.
https://www.pens.co.uk/pen2paper/wp-content/uploads/2014/08/A-History-of-Telegraphy.pdf
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