character: Professor Mark Liu
topic: Foundational Principles of Global Trade
grade: 9
subject: Social Studies
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character: Adam Smith
topic: The Invisible Hand and Market Economics
grade: 9
subject: Social Studies
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character: David Ricardo
topic: Comparative Advantage in Trade
grade: 9
subject: Social Studies
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character: John Maynard Keynes
topic: Government's Role in Trade and Economy
grade: 9
subject: Social Studies
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