865
| Years: 861 862 863 864 - 865 - 866 867 868 869 | |
| Decades: 830s 840s 850s - 860s - 870s 880s 890s | |
| Centuries: 8th century - 9th century - 10th century | |
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Events
- Ethelred succeeds as king of Wessex (or 866).
- Ragnar Lodbrok invades England, but is defeated by king Ella of Northumbria
- A Russian expedition for the first time threatens Constantinople.
- Louis the German divides his kingdom among his sons.
- Lothair, threatened with excommunication, takes back his first wife,
- Bulgaria under Boris I converts to Orthodox Christianity.
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Births
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Deaths
- Saint Ansgar (b. 801)
- Ragnar Lodbrok, King of Denmark and Swedenaf:865
ast:865 bg:865 bs:865 ca:865 cs:865 da:865 de:865 el:865 es:865 eo:865 eu:865 fr:865 ko:865년 hr:865 io:865 it:865 lb:865 hu:865 mk:865 nl:865 no:865 nn:865 pl:865 pt:865 ro:865 ru:865 sk:865 sl:865 sr:865 fi:865 sv:865 tt:865 uk:865 zh:865年