Editing 166 (section)

=== By place ===
==== Roman Empire ====
* [[Dacia]] is invaded by barbarians.
* Conflict erupts on the [[Danube]] frontier between [[Ancient Rome|Rome]] and the [[Germanic tribes|Germanic tribe]] of the [[Marcomanni]].  
* Emperor [[Marcus Aurelius]] appoints his sons [[Commodus]] and [[Marcus Annius Verus Caesar|Marcus Annius Verus]] as co-rulers ([[Caesar (title)|Caesar]]), while he and [[Lucius Verus]] travel to [[Germany]]. 
* End of the war with [[Parthia]]: The Parthians leave [[Armenia]] and eastern [[Mesopotamia]], which both become Roman [[protectorate]]s. 
* A plague (possibly [[small pox]]) comes from the East and spreads throughout the [[Roman Empire]], lasting for roughly twenty years.
* The [[Lombards]] invade [[Pannonia]] (modern [[Hungary]]). They are quickly dispatched by the [[Roman Army]].

==== Asia ====
* King [[Chogo of Baekje]] succeeds to the throne of [[Baekje]], in the [[Korean peninsula]].<ref name=met>{{cite web |title=List of Rulers of Korea |url=https://www.metmuseum.org/toah/hd/koru/hd_koru.htm |website=www.metmuseum.org |access-date=20 April 2019}}</ref>
* Scholars who have denounced [[Eunuch (court official)|eunuch]]s are arrested, killed or banished from the capital and official life in [[Han dynasty]] [[China]]. This is the first of the [[Disasters of the Partisan Prohibitions]], which end in [[184]].
* A Roman [[Sino-Roman relations|envoy]] arrives by sea in Rinan commandery, in southern [[China]] (central [[Vietnam]]). He travels to the Chinese capital [[Luoyang]], and is greeted by [[Emperor Han Huandi of China|Emperor Huan]] of the [[Han dynasty]].