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In page December 31:

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  • 1105 – Holy Roman Emperor Henry IV is forced to abdicate in favor of his son, Henry V, in Ingelheim.[4]
  • 1225 – The Lý dynasty of Vietnam ends after 216 years by the enthronement of the boy emperor Trần Thái Tông, husband of the last Lý monarch, Lý Chiêu Hoàng, starting the Trần dynasty.[citation needed][5]
  • 1229 – James I the Conqueror, King of Aragon, enters Medina Mayurqa (now known as Palma de Mallorca, Spain), thus consummating the Christian reconquest of the island of Mallorca.[6]