+680 was a leap year in the [Julian calendar](/wiki/Julian_calendar), marking a period of profound religious and political shifts. It saw the [Third Council of Constantinople](/wiki/Third_Council_of_Constantinople) and the pivotal Battle of Karbala, events that shaped empires and faith.
+## See also
+- [Byzantine Empire](/wiki/Byzantine_Empire)
+- [Umayyad Caliphate](/wiki/Umayyad_Caliphate)
+- [7th Century](/wiki/7th_Century)
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