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World War I: The U.S. ambassador Walter Hines Page to the United Kingdom is given the Zimmermann Telegram, in which Germany pledges to ensure the return of New Mexico, Texas, and Arizona to Mexico if Mexico declares war on the United States.
King Æthelred I of Northumbria is murdered in Corbridge by a group led by his ealdormen, Ealdred and Wada. The patrician Osbald is crowned, but abdicates within 27 days.
Aviator Amelia Earhart becomes the first woman to fly in an aircraft across the Atlantic Ocean (she is a passenger; Wilmer Stultz is the pilot and Lou Gordon the mechanic).
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