+**809** was a [common year](/wiki/Common_year) in the [Julian calendar](/wiki/Julian_calendar), opening on a Sunday. It marked a period of notable events in early [Medieval history](/wiki/Medieval_history), witnessing shifts in power and cultural exchange across continents.
+## See also
+- [Year](/wiki/Year)
+- [History](/wiki/History)
+- [Number](/wiki/Number)
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