311

Events 
 By place 
 Roman Empire 
 May 5 – Emperor Galerius says there is religious freedom .  He issues his Edict of Toleration, ending persecution of Christians in the Eastern part of the Roman Empire. He dies at age 51.
 Maximinus II divides the Eastern Empire. He starts to persecute Christians again.
 Maxentius, Roman usurper, takes the African provinces from Domitius Alexander.
 Maxentius builds the Circus of Maxentius near the Via Appia. 
 December 3 – Diocletianus dies in Split, Croatia.

 China 
 Jin Huaidi, emperor of the Jin Dynasty, is captured at Luoyang. The capital city is looted by Liu Cong, ruler of the Xiongnu state (Huns).

 By topic 
 Religion 
 July 2 – Pope Miltiades succeeds Pope Eusebius as the 32nd pope.
 The Donatist split occurs in the African church.

 Births 

 Deaths 
 Domitius Alexander, Roman usurper (approximate date)
 December 3 – Gaius Aurelius Valerius Diocletianus, Roman Emperor
 May 5 – Gaius Galerius Valerius Maximianus, Roman emperor
 November 25 – Saint Peter, Patriarch of Alexandria (martyred)
 Sima Yue, prince and regent of the Jin Dynasty