Editing 325 (section)

== Events ==
<onlyinclude>
=== By place ===
==== Roman Empire ====
* [[German and Sarmatian campaigns of Constantine]]: Emperor [[Constantine I]] personally assures the security of the [[Danube]] frontier by defeating the [[Goths]], the [[Vandals]] and the [[Sarmatians]].
* Constantine has deposed Emperors [[Licinius]] and [[Martinian (emperor)|Martinian]] executed in [[Thessaloniki|Thessalonica]] and [[Cappadocia (Roman province)|Cappadocia]] respectively for conspiring and raising troops against him.<ref>{{cite book |last1=Scarre |first1=Christopher |title=Chronicle of the Roman Emperors: the Reign-by-reign Record of the Rulers of Imperial Rome |date=2012 |publisher=Thames & Hudson|location=London; New York|isbn=978-0-500-28989-1 |url=https://books.google.com/books?id=s1tspwAACAAJ |language=en}}</ref>
* Constantine forbids criminals being forced to fight to the death as [[gladiator]]s.<ref>{{cite journal|url=https://www.jstor.org/stable/40984834|quote=Rescript of Constantine.|first=David|last=Potter|title=Constantine and the Gladiators|journal=The Classical Quarterly|volume=60|issue=2|date=December 2010|page=597|doi=10.1017/S0009838810000194 |jstor=40984834 }}</ref>

==== China ====
* [[April 1]] &ndash; Crown Prince [[Emperor Cheng of Jin|Cheng of Jin]], age 4, succeeds his father [[Emperor Ming of Jin|Ming of Jin]] as emperor of the [[Jin dynasty (265–420)|Eastern Jin dynasty]]. During his reign, he is largely advised by [[regent]]s, his uncle [[Yu Liang]] and high-level officials.

=== By topic ===
==== Art ====
* The ''[[Colossus of Constantine]]'' in the [[Basilica of Maxentius and Constantine]], [[Rome]], is perhaps remodelled at about this date.<ref>{{cite book|last=Pohlsander|first=Hans A.|year=1996|title=The Emperor Constantine|publisher=Routledge|location=London|isbn=0-415-13178-2|page=80}}</ref> (The remains are moved to the [[Palazzo dei Conservatori]], Rome, in the 15th century).

==== Religion ====
* [[May 20]] &ndash; [[First Council of Nicaea]]: Constantine summons an ecumenical council of [[bishop]]s in [[İznik|Nicaea]] ([[Turkey]]). The [[Nicene Creed]], adopted on [[June 19]], declares that the members of the [[Trinity]] (the [[God the Father|Father]], the Son, and the [[Holy Spirit in Christianity|Holy Spirit]]) are equal. The council decides that [[Easter]] is celebrated on the first Sunday after the first full moon after the vernal equinox. [[Arius]] is exiled to [[Illyria]]; his works are confiscated and [[Book burning|consigned to the flames]].</onlyinclude>