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
- February 28 – End of the Fourth Council of Constantinople.
- The Danes invade England and conquer East Anglia.
- Among the buildings destroyed by the Danish invaders are the abbey of Ely and the monastery of Peterborough.
- December 31 – King Alfred of Wessex beats the Danes at Englefield, Berkshire. 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
- Edward the Elder, king of England (approximate date)
- Al-Farabi
- Zwentibold, king of Lotharingia
Deaths
- November 20 – King Edmund of East Anglia
- al-Bukhari, Hadith writer
Categories: 870