313

Events 
 By place 
 Roman Empire 
 February 3 – Edict of Milan: Constantine the Great and co-emperor Licinius give religious freedom for all.  They end the persecution of Christians in the Roman Empire.
 Emperor Maximinus II fights at Bosphorus.
 April 30 – Battle of Tzirallum: Licinius defeats his rival Maximinus II.  He becomes Emperor of the Eastern Roman Empire. Maximinus runs away to Nicomedia and commits suicide.

 Asia 
 March 14 – Emperor Jin Huidi is killed by Liu Cong, ruler of the Xiongnu state (Han Zhao). 
 Crown prince Jin Mindi, age 13, becomes the new emperor of the Jin Dynasty.

 By topic 
 Art 
 Basilica of Maxentius and Constantine (Basilica Nova), Rome, is finished.

 Religion 
 Constantine I and Licinius accept Christianity.
 October 2 – Lateran Synod: Donatism is made a heresy.
 Arius preaches of the human nature of Jesus.

 Births 
 Didymus the Blind, Alexandrian theologian (approximate date)
 Shi Hong, emperor of the Chinese Jie state (d. 334)

 Deaths 
 Achillas, Patriarch of Alexandria
 Dowager Zhang, empress of the Xiongnu state (Han Zhao)
 March 14 – Jin Huidi, Chinese emperor of the Jin Dynasty (b. 284)
 Maximinus II, Roman Emperor (b. 270)
 Zhang Huiguang, empress of the Xiongnu state (Han Zhao)

Category:310s