Thomas Alva Edison was an engineer, inventor and entrepreneur from the United States of America, who is considered the greatest inventor in American history. His inventions, including the gramophone, video camera, and early versions of the light bulb, greatly influenced modern industrial society.

He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures.

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Thomas Alva Edison was an American inventor and businessman. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures.