Which form of communication was introduced in the 19th century and is still widely used in the twenty first century?

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History

Church

22 July, 07:21

Which form of communication was introduced in the 19th century and is still widely used in the twenty first century?

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Sloane Gonzalez · Answer 1

Radio telegraphy

The use of radio signals to send voice and written message was discovered in the 19th century. it was necessitated by the discovery of electricity. The applications of radio signals in communications in the 21st century is of far reaching effect.