character: George Westinghouse
topic: Support for Alternating Current
grade: 2
subject: History
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character: Thomas Edison
topic: Opposition to Alternating Current
grade: 2
subject: History
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character: Nikola Tesla
topic: Development of Alternating Current Technology
grade: 2
subject: History
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character: Henry Adams
topic: Impact of Electrification on Society
grade: 2
subject: History
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