GENERAL KNOWLEDGE

Detailed explanation-1: -Contents. Developed in the 1830s and 1840s by Samuel Morse and other inventors, the telegraph revolutionized long-distance communication. It worked by transmitting electrical signals over a wire laid between stations.

Detailed explanation-2: -On May 24, 1844, Samuel Finley Breese Morse demonstrated his electro-magnetic telegraph in the capitol building in Washington, DC, by transmitting a message sent to a railway station in Baltimore, Maryland, approximately thirty-eight miles away.

Detailed explanation-3: -Inventor Samuel Morse developed the telegraph system. Morse’s system sent out a signal in a series of dots and dashes, each combination representing one letter of the alphabet (“Morse code”).