character: Qin Shi Huang
topic: Great Wall Builders
grade: 4
subject: Social Studies
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character: Ming Dynasty Workers
topic: History of the Great Wall
grade: 4
subject: Social Studies
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character: Chinese Emperors
topic: Construction of the Great Wall
grade: 4
subject: Social Studies
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character: Ancient Laborers
topic: Building Techniques of the Great Wall
grade: 4
subject: Social Studies
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