character: Ming Dynasty Officials
topic: Regulations on Maritime Trade
grade: 8
subject: Social Studies
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character: Zheng He
topic: Maritime Expeditions during the Ming Dynasty
grade: 8
subject: Social Studies
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character: Ming Emperors
topic: Policies on Foreign Trade
grade: 8
subject: Social Studies
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character: Wang Gen
topic: Impact of Trade Regulations on Chinese Economy
grade: 8
subject: Social Studies
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