character: Nikola Tesla
topic: Alternating Current and Electricity
grade: 2
subject: History
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character: Thomas Edison
topic: Direct Current and Competition with Tesla
grade: 2
subject: History
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character: Michael Faraday
topic: Electromagnetism and Its Influence on Tesla
grade: 2
subject: History
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character: George Westinghouse
topic: Support for Tesla's Alternating Current System
grade: 2
subject: History
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