WESTWARD EXPANSION INDUSTRIALIZATION URBANIZATION 1870 1900
SECOND INDUSTRIAL REVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Telegraph
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Telephone
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Phonograph
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None of the above
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Detailed explanation-1: -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: -The machine used to receive Morse code was known as a telegraph.
Detailed explanation-3: -A telegraph is a device for transmitting and receiving messages over long distances, i.e., for telegraphy. The word telegraph alone now generally refers to an electrical telegraph. Wireless telegraphy is transmission of messages over radio with telegraphic codes.
Detailed explanation-4: -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”). The inventor submitted a patent for his device, which he called “The American Recording Electro-Magnetic Telegraph” in 1837.
Detailed explanation-5: -A telegram is a message sent by a telegraph, which is also called a wire.