Editing 308 (section)

== Events ==
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=== By place ===

==== Roman Empire ====
* Winter: Emperor [[Galerius]] wins his third and final victory over the [[Sarmatians]].
* [[April]]: In [[Rome]], Emperor [[Maximian]] attempts to depose his son [[Maxentius]], but the soldiers in Rome side with Maxentius and force Maximian to flee to the court of [[Constantine I]].<ref>{{Cite book |last=Barnes |first=Timothy D. |author-link=Timothy Barnes (classicist) |url=https://books.google.com/books?id=LGDjJK-JeSwC |title=Constantine and Eusebius |publisher=[[Harvard University Press]] |year=1981 |isbn=978-0-674-16531-1 |location=Cambridge, Massachusetts |pages=32 |access-date=November 6, 2024}}</ref>
* The overthrow of Maximian prompts the soldiers of [[Africa (Roman province)|Roman Africa]] to prop up the [[vicarius]] of Africa, [[Domitius Alexander]], as a usurper.
* Constantine raids the territory of the Bructeri and builds a bridge across the [[Rhine]] at [[Cologne]].
* [[November 11]] &ndash; The Conference of [[Carnuntum]]: Attempting to keep peace within the [[Roman Empire]], Galerius recalls [[Diocletian]] briefly from retirement, and they convene with Maximian. Diocletian persuades Maximian to return to retirement, and he and Galerius declare Maxentius a public enemy. [[Licinius]] is proclaimed [[Augustus (title)|Augustus]] of the west, while rival contender Constantine I is again declared [[Caesar (title)|Caesar]].
* Bereft of his father's support, Maxentius increasingly presents himself as the ''Conservator Urbis Suae'' (Preserver of His Own City). Construction of the [[Basilica of Maxentius]] (or '''Basilica Nova'''), the largest building in the [[Roman Forum]], is begun.
* Maxentius institutes toleration of the [[Christians]] in his territories.

==== Asia ====
* The [[Han Zhao|Han-Zhao]] Dynasty is established in northern [[China]], marking the official inception of the long lasting [[Uprising of the Five Barbarians]].

=== By topic ===

==== Religion ====
* [[May 27]] or [[June 26]] &ndash; [[Pope Marcellus I]] succeeds [[Pope Marcellinus]] as the 30th [[pope]].
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