Editing 820 (section)

== Events ==
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=== By place ===
====Abbasid Caliphate ====
*Abbasid caliph [[Al-Ma'mun]] appointed [[Isa ibn Yazid al-Juludi]] as Abbasid governor of Yemen for few months.
*Caliph Al-Ma'mun appointed [[Hisn ibn al-Minhal]] as Abbasid governor of Yemen for few months.
*Caliph Al-Ma'mun appointed [[Ibrahim al-Ifriqi]] as Abbasid governor of Yemen. He remained in office until 821.
*Caliph al-Ma'mun appointed [[Abu Nasr ibn al-Sari]] as Abbasid governor of Egypt.

==== Byzantine Empire ====
* [[December 25]] &ndash; Emperor [[Leo V the Armenian|Leo V]] ('''the Armenian''') is assassinated by conspirators in the [[Hagia Sophia]], at [[Constantinople]]. Though unarmed, he fights back fiercely but dies of his wounds. He is succeeded by [[Michael II]], the commander of the [[Imperial guard|palace guard]] (''[[Excubitors|excubitores]]''). Leo's family (including his mother and his wife [[Theodosia, wife of Leo V|Theodosia]]) are [[exile]]d to monasteries in [[Prince Islands|Princes' Islands]].<ref>[[Theophanes Continuatus]], pp. 40–41.</ref>

==== Ireland ====
* [[Fedelmid mac Crimthainn]] assumes the kingship as ruler of [[Munster]] (modern [[Ireland]]).

==== China ====
* Emperor [[Emperor Xianzong of Tang|Xian Zong]] dies from poisoning (due to [[medicine]]s), after a 14-year reign. He is succeeded by his son [[Emperor Muzong of Tang|Mu Zong]], as ruler of the [[Tang dynasty]].
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