870

Europe

 * founded
 * The invades  and conquers.
 * Among the buildings destroyed by the Danish invaders are the abbey of and the monastery of.
 * — The Danes are defeated by a Saxon army at, . It is the first of a series of battles between Wessex and the Danes.
 * is conquered by Arabs from.
 * and divide  among themselves.
 * becomes duke of.
 * marries Richilde.

Religion

 * succeeds as
 * Establishment of autonomous.
 * — End of the.

Births

 * , Persian philosopher and scientist
 * , King of Lotharingia

Deaths

 * — King.
 * , Persian Hadith compiler.
 * , philosopher.