character: George Westinghouse
topic: Contributions to Electric Power Transmission
grade: 8
subject: Social Studies
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character: Thomas Edison
topic: Direct Current vs. Alternating Current
grade: 8
subject: Social Studies
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character: Nikola Tesla
topic: Innovations in AC Power Systems
grade: 8
subject: Social Studies
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character: Samuel Insull
topic: Development of Electric Utility Regulation
grade: 8
subject: Social Studies
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