Final answer:
The phonograph was invented by Thomas Edison in 1877.
Step-by-step explanation:
The phonograph was invented by Thomas Edison in 1877. It was one of the most important inventions of the 19th century and played a crucial role in the development of sound recording and playback technology. Edison's phonograph used a rotating cylinder with indentations that captured and reproduced sound, making it the first practical device for recording and playing back audio.
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