855

Europe

 * succeeds as western emperor. Two other sons,  and, also get parts of the kingdom.
 * The is created by the.
 * , king of and, abdicates in favor of his son.
 * becomes king of.

Religion

 * — succeeds  as the 104th.
 * is made by Lothair.
 * grants the churches the right to receive s.

Deaths

 * —, western emperor (b. )
 * — Muslim scholar. (b. )