character: Pope Urban II
topic: Call for the First Crusade
grade: 11
subject: History
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character: Crusaders
topic: Military Campaigns in the Holy Land
grade: 11
subject: History
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character: Byzantine Empire
topic: Appeal for Help and Influence on Crusades
grade: 11
subject: History
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character: Papal Authority
topic: Role in Medieval Society and Crusade Legitimacy
grade: 11
subject: History
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