What replaced Chappe's semaphore system in the 1850s?
Telephone
Radio
Electric telegraph systems
Smoke signals
Answer
In the 1850s, Claude Chappe's semaphore system was replaced by electric telegraph systems. These new systems allowed for even faster and more efficient long-distance communication, eventually leading to the development of modern telecommunications technology.
Claude Chappe Brain Buster: 21 Questions to Explode Your Mind
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