Thomas Edison could make and re-play sound recordings by 1877, but there was no way to copy or duplicate them until __________ found a way to do it 10 years later in 1887.

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The Answer of Thomas Edison could make and re-play sound recordings by 1877, but there was no way to copy or duplicate them until __________ found a way to do it 10 years later in 1887.

Thomas Edison Could Make and Re-Play Sound Recordings by 1877