character: Serbia
topic: Russia's support of Serbia during the Balkan conflicts
grade: 9
subject: History
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character: Austria-Hungary
topic: Diplomatic tensions with Russia in the lead-up to World War I
grade: 9
subject: History
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character: Bulgaria
topic: Bulgaria's alliances and tensions with Russia in the Balkans
grade: 9
subject: History
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character: Ottoman Empire
topic: Russia's role in the decline of the Ottoman Empire and relations in the Balkans
grade: 9
subject: History
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