The Church of the East or the East Syriac Church, also called the Church of Seleucia-Ctesiphon, the Persian Church, the Assyrian Church, the Babylonian Church or the Nestorian Church, is one of three major branches of Nicene Eastern Christianity that arose from the Christological controversies of the 5th and 6th centuries, alongside the Miaphisite churches (which came to be known as the Oriental O... Wikipedia