Respuesta :

Answer:

Developed in the 1830s and 1840s by Samuel Morse (1791-1872) and other inventors, the telegraph revolutionized long-distance communication. It worked by transmitting electrical signals over a wire laid between stations

Explanation:

Answer:

Wire

Explanation:

Samuel Mores told the idea to the govrnmnet, the government gave  $30,000 to Samuel Mores to set the wires across U.S.A

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