Editing 452 (section)

=== By place ===
==== Europe ====
* The [[Huns]] under [[Attila]] invade [[Northern Italy]]. Emperor [[Valentinian III]] flees from [[Ravenna]] to [[Rome]], and sends [[Pope Leo I]] to persuade Attila to return to the [[Great Hungarian Plain|Hungarian Plain]]. The cities of [[Aquileia]], [[Padua]] and [[Verona]] are destroyed by the Huns. [[Milan]] is saved because Attila is offered a huge amount of gold. [[Flavius Aetius]] (''[[magister militum]]'') is unable to raise a new army against him.
* [[Rome]] is threatened by Attila but not attacked, due to a last-minute effort by Leo I. Threatened by news of reinforcements from the [[Eastern Roman Empire]] and the [[Plague (disease)|plague]] breaking out among the Huns, Attila is persuaded to withdraw. 
* The city of [[Venice]] is founded by [[fugitive]]s from Attila's army who flee to small islands in the [[Venetian Lagoon]].
* King [[Vortigern]] marries [[Hengist and Horsa|Hengist]]'s daughter, [[Rowena]], and becomes king of the [[Britons (historical)|Britons]]. The [[Anglo-Saxons]] increase their settlements in [[Great Britain|Britain]] (according to [[Matter of Britain|British legend]]).

==== China ====
* [[Tuoba Yu|Nan'an Yinwang]] succeeds his father [[Emperor Taiwu of Northern Wei]], after he is [[Assassination|assassinated]] by the [[eunuch]] [[Zong Ai]]. Later this year, Yinwang is murdered as well, and Ai is overthrown by a group of high officials. [[Emperor Wencheng of Northern Wei|Wencheng Di]], age 12, becomes the new emperor of [[Northern Wei]].</onlyinclude>