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The telegraph was invented by Samuel F.B Morse. It worked by transmitting electrical signals over a wire laid between stations.
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Christopher Sholes created the first modern typewriter. It was an improved version of the typewriter but had a similar purpose.
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Alexander Graham Bell created the first telephone. It allowed people to communicate over longer distances
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Thomas Edison created the first phonograph. While working on an improvement to the telephone, Edison figured out a way to record sound on a cylinder wrapped in tinfoil.
