character: The Great Wall Builders
topic: Labor and construction techniques used in building the Great Wall of China.
grade: 3
subject: History
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character: Ancient Chinese Workers
topic: Types of laborers who contributed to the Great Wall's construction.
grade: 3
subject: History
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character: Emperor Qin Shi Huang
topic: The role of the emperor in initiating the Great Wall project.
grade: 3
subject: History
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character: Stone and Earth
topic: Materials used in the construction of the Great Wall.
grade: 3
subject: History
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