Council Of Chalcedon

After the of the Emperor II in 450, his sister married Marcian, who accordingly became emperor. The new imperial officials convoked a at Chalcedon in order to see to the matters of the Eutychians and the Nestorians. As a result of this council, the Coptic patriarch Dioscorus was deposed and exiled to Gangra. The also adopted the famous Canon 28, which considered the of Constantinople as the “New Rome” and hence held first place among the apostolic sees. The adopted the (letter) of Leo to as orthodox.

The refused to recognize this council, and this caused a schism between the Orientals and the rest of Christendom. In the 20th century, theologians from the East and the West accepted that both the Chalcedonian and the non-Chalcedonian statements on Christology are acceptable as orthodox.