Editing 373 (section)

== Events ==
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=== By place ===
==== Roman Empire ====
* Emperor [[Valens]] is converted to [[Arianism]], and orders the persecution of Trinitarian [[Christians]] in the [[Byzantine Empire|Roman East]]. 
* [[Quintus Aurelius Symmachus]] becomes [[proconsul]] of [[Africa]], and is made a member of the pontifical college.
* [[Count Theodosius]] is appointed commander of an expedition to suppress the rebellion of [[Firmus (4th-century usurper)|Firmus]] in [[Mauretania]].
* The [[Aqueduct of Valens]] is inaugurated near [[Constantinople]] (modern [[Istanbul]]); the [[Roman aqueduct|aqueduct]] has a length of 971 meters.

==== Europe ====
* [[Battle of the Tanais River]]: The [[Huns]] defeat the [[Alans]] near the [[Don River, Russia|Don]], sending the remnants fleeing westward.

==== Persia ====
* King [[Shapur II]] declares war as a result of Valens' support of [[Kingdom of Armenia (antiquity)|Armenia]]. Emperor Valens makes [[Antioch]] his military base for the campaign against [[Sassanid Empire|Persia]].

=== By topic ===
==== Religion ====
* [[Saint Martin of Tours]] undertakes the [[Christianization]] of [[Gaul]].
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