character: Charles Goodyear
topic: Vulcanization Process and Tire Durability
grade: 8
subject: Social Studies
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character: Charles Goodyear
topic: History of Rubber Manufacturing
grade: 8
subject: Social Studies
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character: Vulcanization
topic: Impact on Industrial Production
grade: 8
subject: Social Studies
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character: Tire Durability
topic: Advancements in Transportation
grade: 8
subject: Social Studies
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