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The original was posted on /r/todayilearned by /u/Upstairs_Drive_5602 on 2025-06-11 10:21:54+00:00.

Original Title: TIL Catherine of Aragon became Europe’s first female diplomat in 1507 as Spain’s ambassador to England. She married Prince Arthur, who died in 1502, then his brother Henry VIII in 1509. Their marriage was pivotal in sparking the English Reformation.