→Ante-Nicene era (100-325)
*313 The [[Edict of Milan]] is issued by St. [[Constantine the Great]] and his co-emperor Licinius, officially declaring religious freedom in the Roman Empire and specifically naming toleration for Christianity.
*314 Condemnation of [[Donatism]] as a heresy.
*318 St. [[Pachomius the Great]], a disciple of [[Anthony the Great]], organizes a community of ascetics at Tabennis in Egypt, founding cenobitic [[monasticism]].
*320 Expulsion of [[Arius]] by St. [[Alexander of Alexandria]].