Editing 321 (section)

== Events ==
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=== By topic ===

==== Roman Empire ====
* Emperor [[Constantine I]] expels the [[Goths]] from the [[Danube]] frontier and repairs [[Trajan's Bridge]]. He leads an expedition into the old province [[Dacia Mediterranea|Dacia]] (modern [[Romania]]) and makes peace with the barbarians.
* [[March 7]] - Constantine I signs legislation directing urban residents to refrain from work, and businesses to be closed, on the "[[Sunday|venerable day of the Sun]]". An exception is made for agriculture.

==== Asia ====
* [[Tuoba Heru]] launches a [[coup d'état]] against his cousin [[Tuoba Yulü]] and becomes the new Prince of [[Dai (Sixteen Kingdoms)|Dai]].

=== By topic ===

==== Art and Science ====
* [[Calcidius]] translates [[Plato]] into [[Latin]].

==== Food and Drink ====
* Constantine I assigns convicts to grind Rome's [[flour]], in a move to hold back the rising price of food in an empire whose population has shrunk as a result of [[Plague (disease)|plague]].

==== Religion ====
* The [[Christian Church]] is allowed to hold property.
* A [[synod]] held in [[Alexandria]] condemns [[Arianism]].
* [[History of the Jews in Germany]]: Jews in modern-day Germany are documented for the first time, in [[Colonia Claudia Ara Agrippinensium|Colonia Agrippinensium]] (modern-day [[Cologne]]).<ref>{{Citation |last=Toch |first=Michael |title=Appendix Three Places of Jewish Settlement in France and Germany |date=2013-01-01 |work=The Economic History of European Jews |pages=289–310 |url=https://brill.com/display/book/9789004235397/B9789004235397_014.xml |access-date=2024-02-03 |publisher=Brill |language=en |doi=10.1163/9789004235397_014 |isbn=978-90-04-23539-7}}</ref></onlyinclude>