A system for transmitting messages from distance along a wire, especially one creating signals by making-and-breaking an electrical connection. Invented in the 1830s-1840s, it revolutionized long-distance communication.
Morse Code: A system used for transmitting messages where different arrangements of short signals (dots) and long signals (dashes) represent different letters or numbers.
Samuel Morse: An American inventor who contributed significantly towards the development of telegraphy system.
Pony Express: A mail service delivering messages before telegraph was invented.
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