character: Alexander Graham Bell
topic: Communication Innovations and Their Societal Effects
grade: 9
subject: History
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character: Thomas Edison
topic: Inventions in Communication Technology
grade: 9
subject: History
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character: Samuel Morse
topic: Development of Telegraphy and Its Impact
grade: 9
subject: History
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character: Guglielmo Marconi
topic: Advancements in Wireless Communication
grade: 9
subject: History
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