820s
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Centuries: 8th century - 9th century - 10th century
Decades: 770s - 780s - 790s - 800s - 810s - 820s - 830s - 840s - 850s - 860s - 870s
Years: 820 821 822 823 824 825 826 827 828 829
Events:
- Egbert of Wessex rises to the position of Bretwalda.
- The Saracens conquer Crete and invade Sicily.
- The Kingdom of Navarre is established.
- 829: Ansgar established the first church in Sweden.
Important people: