845
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| Years: 841 842 843 844 - 845 - 846 847 848 849 | |
| Decades: 810s 820s 830s - 840s - 850s 860s 870s | |
| Centuries: 8th century - 9th century - 10th century | |
Events
- March 28 - Paris is sacked by Viking raiders, probably under Ragnar Lodbrok, who collect a huge ransom in exchange for leaving.
- Vikings also sack Hamburg and Melun.
Births
Deaths
- Michael I Rhangabes, Byzantine Emperor
- al-Khwarizmi, mathematician (approximate date)af:845
ast:845 bg:845 ca:845 cs:845 de:845 el:845 es:845 eo:845 eu:845 fr:845 ko:845년 hr:845 io:845 it:845 lb:845 hu:845 nl:845 nb:845 nn:845 pl:845 pt:845 ro:845 ru:845 sk:845 sl:845 sr:845 fi:845 sv:845 tt:845 uk:845 zh:845年