What effect did the telegraph have on communication? a. communication became much less expensive. b. telegraphs rivaled telephones for speed and convenience. c. people could communicate instantly across long distances. d. sound traveled more clearly and crisply.

C. People could communicate instantly across long distances.

Explanation:

The telegraph is a technological device that uses electrical signs in order to send coded messages, like Morse code, through cables or radio signals. It was first developed during the 18th century, but it was during the 19th century that it was widely extended through different countries, mainly in Europe and North America. For the first time in History, this technology allowed people to communicate instantly across long distances.

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