1172
Southern Song refine advanced agricultural science
Song agronomists compiled increasingly detailed treatises on wet-rice cultivation, systematic crop rotation, natural pest management, and soil improvement that helped sustain a population now exceeding one hundred million - the largest on earth by a wide margin. Innovations in early-ripening rice varieties originally imported from Champa in Vietnam allowed reliable double cropping across the Yangtze delta, producing the grain surpluses that funded the dynasty's military survival.
Benjamin of Tudela completes his travels
The Jewish traveler from the Kingdom of Navarre returned home to Spain after a decade-long journey through the Mediterranean basin, the Crusader states, Mesopotamia, Persia, and possibly as far as the borders of India and China. His remarkable Itinerary, meticulously cataloging Jewish communities and local conditions from Barcelona to Baghdad, remains one of the most vivid and historically reliable travel accounts of the entire twelfth-century world.
Henry II's penance at Avranches
Still facing excommunication for Becket's murder, Henry met papal legates at Avranches Cathedral in Normandy and underwent public penance: swearing he had not ordered the killing, endowing monasteries, and promising two hundred knights for the Holy Land. The legates absolved him. The penance was a carefully staged performance that allowed both king and church to save face, though neither Henry's conscience nor the pope's suspicions were fully satisfied.
Henry II formally named Lord of Ireland
At the Synod of Cashel, Irish bishops acknowledged Henry II as Lord of Ireland and swore reformed obedience to the church hierarchy in Canterbury. The ceremony legitimized the Norman conquest that was already well underway in Leinster and eastern Munster. The synod imposed continental church practices on the Irish clergy, including mandatory tithes and standardized marriage law, aligning the Irish church with Roman norms for the first time.
Waldemar I sacks Arkona
Danish forces under Waldemar the Great and Bishop Absalon of Roskilde destroyed the temple of Svantovit on the island of Rugen, the last great pagan Slavic cult center on the Baltic. Its wooden idol was chopped up and burned and the priests baptized on the spot. The destruction of Arkona marked the effective end of organized Slavic paganism on the Baltic coast and opened Rugen to Danish colonization.