character: Marco Polo
topic: Exploration and Trade Routes
grade: 4
subject: Social Studies
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character: Ferdinand Magellan
topic: Circumnavigation and Trade Expansion
grade: 4
subject: Social Studies
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character: Queen Isabella
topic: Support of Exploration and Trade
grade: 4
subject: Social Studies
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character: Christopher Columbus
topic: Discovery and Exchange of Goods
grade: 4
subject: Social Studies
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