character: Pope Urban II
topic: Responses to Henry IV's Actions
grade: 11
subject: History
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character: Henry IV
topic: Conflict with Pope Urban II
grade: 11
subject: History
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character: Pope Gregory VII
topic: Investiture Controversy
grade: 11
subject: History
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character: Holy Roman Empire
topic: Power Struggles with the Papacy
grade: 11
subject: History
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