868

Asia

 * — Printing of , the oldest dated printed book.
 * dynasty of takes.

Europe

 * In, and  decide on a division of the lands of former emperor  (now in possession of  and ).
 * In  marries  and goes to the aid of, who is attacked by Danes.
 * Establishment of the of, by , after the reconquest from the Moors of the region north of the  river.
 * drives invading Danes and Norwegians out of Ireland after defeating them at the.

Religion

 * writes Contra Graecorum opposita.

Births

 * , Shia Imam

Deaths

 * —, Shia Imam (b. )
 * , an Arabic prose writer, historian, and author of works of adab, Mu'tazili theology, and politico-religious polemics (b. ).