
thumb|400px|Map of the four Eastern Churches in the Pentarchy, c. 500 AD. In this version, almost all of modern Greece, such as the Balkans and [[Crete, is under the jurisdiction of the Holy See of Rome. Emperor Leo III moved the border of the Patriarchate of Constantinople westward and northward, in the 8th century.]]
thumb|400px|Map of the four Eastern Churches in the Pentarchy, c. 500 AD. In this version, almost all of modern Greece, such as the Balkans and [[Crete, is under the jurisdiction of the Holy See of Rome. Emperor Leo III moved the border of the Patriarchate of Constantinople westward and northward, in the 8th century.]]
Pentarchy (, ) was a model of Church organization formulated in the laws of Emperor Justinian I () of the Roman Empire. In this model, the Christian Church is governed by the heads (patriarchs) of the five major episcopal sees of the Roman Empire: Rome, Constantinople, Alexandria, Antioch and Jerusalem.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).