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NEEDED ASAP Who found a way to insulate telegraph wires effectively for underground and underwater? Samuel Morse Guglielmo Marconi Werner von Siemens Thomas Edison
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Who found a way to insulate telegraph wires effectively for underground and underwater?

Samuel Morse


Guglielmo Marconi


Werner von Siemens


Thomas Edison

User Jaehee
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Answer: Werner von Siemens

User RunHolt
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