Egypt · Religion & Belief · Hard
Answer: The Miaphysite-Chalcedonian schism — The Miaphysite-Chalcedonian schism arose from the Council of Chalcedon's adoption of the dyophysite formula (Christ has two natures), which the Coptic Church — adhering to Cyril of Alexandria's 'one nature of the Word incarnate' (mia physis) — rejected as Nestorianism by another name, resulting in a lasting separation that defines Coptic Christian identity.
The Miaphysite-Chalcedonian schism arose from the Council of Chalcedon's adoption of the dyophysite formula (Christ has two natures), which the Coptic Church — adhering to Cyril of Alexandria's 'one nature of the Word incarnate' (mia physis) — rejected as Nestorianism by another name, resulting in a lasting separation that defines Coptic Christian identity.