事件基督教公元451451 CE
卡尔西顿公会议（451）Council of Chalcedon (451)
定义基督一位二性的关键会议。H 轨：帝国—教会政治与术语战；T 轨：卡尔西顿派正统 vs 东方非卡尔西顿教会记忆。Key council defining one person in two natures. H-track: imperial-ecclesial politics and terminology wars; T-track: Chalcedonian orthodoxy vs non-Chalcedonian Oriental memories.