Editing 836 (section)

=== By place ===
==== Abbasid Caliphate ====
* Driven by tensions between his favoured [[Turkic peoples|Turkish]] guard and the populace of [[Baghdad]], [[Abbasid]] [[caliph]] [[al-Mu'tasim]] moves his residence to the new city of [[Abbasid Samarra|Samarra]], 130&nbsp;km north of Baghdad. With brief interruptions, the city will remain the seat of the Abbasid caliphs until [[892]].

==== Britain ====
* [[Carhampton, Somerset|Battle of Carhampton]]: Danish [[Vikings]] arrive in the [[Wessex]] areas of [[Somerset]] and [[North Devon]]. [[Ecgberht, King of Wessex]] fights them but is forced to withdraw.<ref>Bush, Robin (1994). Somerset: The complete guide. Wimborne, Dorset: Dovecote Press, pp. 55–56. {{ISBN|1-874336-26-1}}.</ref>

==== Europe ====
* [[July 4]] &ndash; [[Pactum Sicardi]]: Prince [[Sicard of Benevento]] signs a 5-year [[armistice]] with the duchies of [[Duchy of Sorrento|Sorrento]], [[Duchy of Naples|Naples]] and [[Duchy of Amalfi|Amalfi]]. He recognizes the trade of [[merchant]]s among the three cities in [[Southern Italy]].
* [[Malamir of Bulgaria|Malamir]], ruler (''[[Khan (title)|khan]]'') of the [[First Bulgarian Empire|Bulgarian Empire]], dies after a 4-year reign and is succeeded by his nephew [[Presian I of Bulgaria|Presian I]]. Because of his young age and inexperience, the Bulgarian state affairs are dominated by his minister and commander-in-chief [[Isbul]].
* [[Pietro Tradonico]] is appointed doge of [[Republic of Venice|Venice]] (until [[864]]).
* The oldest known mention is made of the city of [[Soest, Germany|Soest]] (modern Germany).