840s
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Centuries: 8th century - 9th century - 10th century
Decades: 790s - 800s - 810s - 820s - 830s - 840s - 850s - 860s - 870s - 880s - 890s
Years: 840 841 842 843 844 845 846 847 848 849
Events
- After the death of Louis the Pious, his sons Charles the Bald, Louis the German and Lothair II of Lotharingia fight about the division of the empire until the treaty of Verdun (843).
- The Pictish kingdom and the Scottish kingdom of Dalriada are unified. The unified kingdom is called Alba.
- Viking raid of Western Francia (France) (845).
- Beginning of Arab domination on Taranto, which will last until 880.