870
| Years: 866 867 868 869 - 870 - 871 872 873 874 | |
| Decades: 840s 850s 860s - 870s - 880s 890s 900s | |
| Centuries: 8th century - 9th century - 10th century | |
Events
- Prague Castle founded
- February 28 - End of the Fourth Council of Constantinople.
- The Great Summer Army invades England and conquers East Anglia.
- Among the buildings destroyed by the Danish invaders are the abbey of Ely and the monastery of Peterborough.
- December 31 - The Danes are defeated by a Saxon army at Englefield, Berkshire. It is the first of a series of battles between Wessex and the Danes.
- Malta is conquered by Arabs from Sicily.
- Establishment of autonomous Bulgarian Archbishopric.
- Treaty of Mersen: Charles the Bald and Louis the German divide Lotharingia among themselves.
- Borivoj becomes duke of Bohemia.
- Michael II succeeds Michael I as patriarch of Alexandria
- Charles the Bald marries Richilde.
Births
- Al-Farabi, Persian philosopher and scientist
- Zwentibold, King of Lotharingia
Deaths
- November 20 - King Edmund of East Anglia
- al-Bukhari, Persian Hadith compileraf:870
am:870 እ.ኤ.አ. ar:870 an:870 ast:870 az:870 bn:৮৭০ bpy:মারি ৮৭০ bs:870 bg:870 ca:870 cv:870 cs:870 co:870 da:870 de:870 et:870 el:870 es:870 eo:870 eu:870 fr:870 ga:870 ko:870년 hr:870 io:870 id:870 is:870 it:870 he:870 ka:870 ht:870 (almanak jilyen) la:870 lb:870 lmo:870 hu:870 mk:870 ms:870 nl:870 ja:870年 nap:870 no:870 nn:870 oc:870 pl:870 pt:870 ksh:Joohr 870 ro:870 ru:870 год sq:870 ru-sib:870 scn:870 sk:870 sl:870 sr:870 fi:870 sv:870 tt:870 th:พ.ศ. 1413 tr:870 uk:870 uz:870 vec:870 zh:870年