Who invented the telegraph?
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An electrical telegraph is a telegraph that uses electrical signals, usually conveyed via dedicated telecommunication circuit or radio. The electrical telegraph, or more commonly just telegraph, superseded optical semaphore telegraph systems, thus becoming the first form of electrical telecommunications. read more
Source: en.wikipedia.org
In 1844, Morse sent his first telegraph message, from Washington, D.C., to Baltimore, Maryland; by 1866, a telegraph line had been laid across the Atlantic Ocean from the U.S. to Europe. read more
Source: history.com
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Invention of the Telegraph
www.loc.gov
Morse Code & the Telegraph
www.history.com
The History of the Electric Telegraph and Telegraphy
www.thoughtco.com
The History of the Telegraph
www.personal.psu.edu
Who invented telegraph?
www.whoinvented.org