阴土兔年 (female Earth-Rabbit) 1226 or 845 or 73 —to— 阳金龙年 (male Iron-Dragon) 1227 or 846 or 74
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Levant
January – The Seljuk ruler Mahmud I is expelled from Baghdad by his brother Barkiyaruq, but Mahmud manages to retake the city, during his spring offensive.[1]
August 30 – After the failure of the Council of Liubech in 1097, the Congress of Vytechev establishes peace and the feudal system in Kievan Rus; the princes come to an agreement to share the country between them. Sviatopolk II of Kiev becomes the first Grand Prince.
September 16 – Battle of Malagon: The Almoravid army defeats the Castellan troops.[6]
December 25 – Philip I elevates his son Louis VI as co-ruler to the government of the realm.
Philip I conquers the Vexin area, and adds the city of Bourges and the province of Berry to his estate.[10]
In Iceland, the Althing decides that the laws should be transferred to a written form (approximate date).
Intense urban activity in north and central Europe: Kalmar (Kungälv) and Varberg (Sweden) are chartered; The cities of Aach (southern Germany) and Nakléřov in Bohemia are created. The castle of Burg Eppstein is built in central Germany.
A collective of Tuareg trading clans decide to permanently settle the city of Timbuktu (modern Mali) north of Djenné along the Niger River. Timbuktu will later achieve fame as a center of Islamic learning. The Sankore, Djinguereber and Sidi Yahya mosques are among Timbuktu's most famous religious and scholarly institutions (approximate date).
China
February 23 – Emperor Zhezong dies after a 15-year reign. He is succeeded by his 17-year-old brother Huizong as ruler of the Song dynasty. At about this date, the Chinese population reaches around 100 million and in Kaifeng, his capital, the number of registered citizens within the walls is about 1,050,000 with the army stationed here boosting the overall populace to some 1.4 million people.
November – The council of Poitiers decrees that the followers of Robert of Arbrissel have to settle down and live under a rule, leading to the foundation of Fontevraud Abbey.[11]
Frederick I becomes archbishop of Cologne, and begins the construction of the castle of Volmarstein.