character: Thomas Edison
topic: The War of Currents
grade: 6
subject: Science
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character: Nikola Tesla
topic: Alternating Current
grade: 6
subject: Science
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character: George Westinghouse
topic: AC vs. DC Debate
grade: 6
subject: Science
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character: Henry Ford
topic: Impact of Electric Power on Industry
grade: 6
subject: Science
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