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Which of these inventions aroso from an attempt to help hearing-impaired poople? the multiplex telegraph the telephone the phonograph the motion-picture machine

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Which of these inventions aroso from an attempt to help hearing-impaired poople?
the multiplex telegraph
the telephone
the phonograph
the motion-picture machine

Which of these inventions aroso from an attempt to help hearing-impaired poople? the multiplex telegraph the telephone the phonograph the motion-picture machine

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LorenaVeterano · Tutor por 9 anos

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The telephone arose from an attempt to help hearing-impaired people. Alexander Graham Bell, who invented the telephone, was originally working on ways to improve communication for the deaf, as his mother and wife were both hearing-impaired. His work in acoustics and sound transmission eventually led to the invention of the telephone.
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