Editing 306 (section)

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

==== Roman Empire ====
* [[July 25]] &ndash; [[Constantius I]] dies outside [[Eboracum]] (modern-day [[York]]). Constantine, aged 23 or 24, is declared emperor by his troops.<ref>Eutropius, ''Breviarum'' {{usurped|1=[https://web.archive.org/web/20031019084032/http://www.forumromanum.org/literature/eutropius/trans10.html#1 10.1–2]}}</ref> Emperor [[Galerius]] grants Constantine the title of [[Caesar (title)|Caesar]], and elevates [[Flavius Valerius Severus]] to emperor in the Western part of the Roman Empire.<ref>''Consularia Constantinopolitana'' 306, in ''[[Monumenta Germaniae Historica]]'' ant. 11: ''[[iarchive:chronicaminorasa09momm/page/231/mode/1up|Chronica Minora]]'' Vol. 1 ([[Theodor Mommsen]] ed., 1892) p. 231. {{ISBN|978-0656631308}}</ref><!--Western Roman Empire did not exist as a separate entity yet-->
* Constantine institutes toleration of the [[Christians]] in his territories.
* Constantine establishes his capital in [[history of Trier|Augusta Treverorum]] ([[Trier]]). He begins a major expansion of the city, strengthening the [[defensive wall|walls]], expanding the palace complex and building the [[Public bathing|Imperial Baths]].
* Building on the efforts of [[Diocletian]], Galerius introduces the poll tax to central and southern Italy and truncates the size of the [[Praetorian Guard]], with plans to disband the Guard altogether.
* [[October 28]] &ndash; [[Maxentius]], son of former Western Emperor [[Maximian]], leads a revolt by the [[Praetorian Guard]] and members of the [[Roman Senate|Senate]] in [[Ancient Rome|Rome]], and is proclaimed Emperor. [[Southern Italy]] supports Maxentius, as do [[Africa (Roman province)|Africa]], [[Corsica]], [[Sardinia]] and [[Sicily]]. Maxentius recalls Maximian from retirement, who joins his son in Rome. 
* Winter: Constantine fights with success against the [[Franks]].
* Galerius has the [[Arch of Galerius and Rotunda#Rotunda of Galerius|Rotunda of Galerius]] built in [[Thessaloniki]] ([[Macedonia (Roman province)|Macedonia]]).

==== Asia ====
* The [[War of the Eight Princes]] ends in [[China]].

=== By topic ===

==== Religion ====
* The [[Synod of Elvira]] concludes with the issue of various [[Canon law|canon]]s, including one declaring that killing through a magic [[Spell (paranormal)|spell]] is a sin and the work of the devil.
* [[Metrophanes of Byzantium|Metrophanes]] becomes [[bishop of Byzantium]].
* The [[Patriarchate of Lisbon]] is established.
* Christianity is established in [[Roman Britain]]. British bishops participate in the councils of [[Council of Arles (314)|Arles]] ([[314]]), [[First Council of Nicaea|Nicaea]] ([[325]]) and Arminum ([[349]]).
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