character: Serbia
topic: Ally of Great Britain in World War I
grade: 4
subject: History
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character: Great Britain
topic: Alliances in World War I
grade: 4
subject: History
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character: Austria-Hungary
topic: Opposition to Serbia in World War I
grade: 4
subject: History
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character: Russia
topic: Support for Serbia during World War I
grade: 4
subject: History
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