May 24th – The Fifth Crusade leaves Acre for Egypt.
August 31 – Al-Kamil becomes the new Egyptian Sultan on the death of his father Al-Adil.
Damietta is besieged by the knights of the Fifth Crusade.
Minamoto no Sanetomo becomes Udaijin of Japan.
The Kara-Khitan Khanate is destroyed by Genghis Khan’s Mongolian cavalry.
Genghis Khan’s Mongols, under the leadership of his eldest son Jochi, conduct a second campaign against the Kyrgyz.
Genghis Khan proposes to the Khwarazm shah of Persia that he accept Mongol overlordship and establish trade relations.
March – Treaty of Worcester recognises Llywelyn the Great as regent of south Wales
July – Spain: In order to facilitate the movement of Reconquista, Pope Honorius III reverses Innocent III’s earlier judgement and declares Ferdinand III of Castile legitimate heir to the Kingdom of Leon.