character: British Intelligence
topic: The Zimmermann Telegram and its role in shifting U.S. public opinion
grade: 11
subject: History
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character: Zimmermann Telegram
topic: Impact on U.S. entry into World War I
grade: 11
subject: History
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character: U.S. Public Opinion
topic: Influence of intercepted communications in wartime
grade: 11
subject: History
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character: World War I
topic: Factors leading to U.S. involvement
grade: 11
subject: History
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