857
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| Years: 853 854 855 856 - 857 - 858 859 860 861 | |
| Decades: 820s 830s 840s - 850s - 860s 870s 880s | |
| Centuries: 8th century - 9th century - 10th century | |
Events
- Viking raid of Dorestad.
- Michael III of Byzantium, under influences of his uncle Bardas, banishes his mother Theodora. Bardas becomes the most powerful person in the empire.
Births
Deathsaf:857 ast:857 bg:857 ca:857 cs:857 de:857 el:857 es:857 eo:857 eu:857 fr:857 ko:857년 hr:857 io:857 it:857 lb:857 hu:857 nl:857 nb:857 nn:857 pl:857 pt:857 ro:857 ru:857 sk:857 sl:857 sr:857 fi:857 sv:857 tt:857 uk:857 zh:857年