character: Archduke Franz Ferdinand
topic: The assassination that sparked the ultimatum
grade: 9
subject: History
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character: King Peter I of Serbia
topic: Serbia's response to the Austro-Hungarian ultimatum
grade: 9
subject: History
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character: Count Leopold Berchtold
topic: Austro-Hungarian foreign minister who issued the ultimatum
grade: 9
subject: History
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character: Gavrilo Princip
topic: The assassin whose actions led to the ultimatum
grade: 9
subject: History
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