character: Zheng He
topic: Ming Dynasty Naval Expeditions
grade: 8
subject: Social Studies
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character: Emperor Yongle
topic: Support for Naval Trade
grade: 8
subject: Social Studies
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character: Ming Government
topic: Trade Restrictions and Protectionism
grade: 8
subject: Social Studies
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character: Ming Dynasty Merchants
topic: Impact of Naval Trade Policies
grade: 8
subject: Social Studies
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