character: George Westinghouse
topic: Promotion of Alternating Current
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: Role in the Development of Alternating Current
grade: 8
subject: Social Studies
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character: William Stanley
topic: Early AC Transformer Innovations
grade: 8
subject: Social Studies
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