Editing 1224 (section)

=== October – December ===
* [[October]] – Lý Huệ Tông, Emperor of Vietnam, cedes the throne to his second daughter, the Princess Chiêu Thánh, who becomes the Empress Regnant Lý Chiêu Hoàng.<ref>{{Cite book |last=Chapuis |first=Oscar |url=https://books.google.com/books?id=Jskyi00bspcC&q=%22tran+anh+tong%22&pg=PA85 |title=A History of Vietnam: From Hong Bang to Tu Duc |date=August 30, 1995 |publisher=Bloomsbury Academic |isbn=978-0-313-29622-2 |page=79 |language=en}}</ref> [[Trần Thủ Độ]] then arranges a marriage between the Empress and [[Trần Cảnh]], the 8-year-old son of Trần Thừa, and ends the rule of the overthrow the Lý dynasty by making the Empress pass the throne to Trần Cảnh the following year.
* [[November 24]] – Representatives of King [[Louis VIII of France]] and [[Frederick II, Holy Roman Emperor]], sign a treaty at [[Catania]], providing that neither of the monarchs would harbor rebels from the other.<ref>Richard Kay, ''The Council of Bourges, 1225: A Documentary History'' (Taylor & Francis, 2019)</ref>
* [[December]] – [[Theodore Komnenos Doukas|Theodore Komnenos]] (Doukas), ruler of the [[Despotate of Epirus]], captures [[Thessaloniki]] – beginning the ''[[de facto]]'' Byzantine [[Empire of Thessalonica]]. Later, Theodore Komnenos was crowned Byzantine emperor but is not recognized as such by the rest of the Greek or Latin population.
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