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I don't have specific context about what "1399" refers to. Could you provide more information about whether this is a historical year, a book, a film, a historical event, or something else? That would help me write an accurate overview for you.
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Article
September 29: King Richard II of England, taken prisoner by the rebel Henry Bolingbroke, abdicates and presents his crown to the new King Henry IV.
Henry IV of EnglandYear 1399 (MCCCXCIX) was a common year starting on Wednesday of the Julian calendar.