Editing 451 (section)

=== By topic ===
==== Religion ====
* [[October 8]] – [[November 1]] – [[Council of Chalcedon]], an [[ecumenical council]] of the Church: The [[monophysitism]] of [[Eutyches]] is repudiated, and the [[Chalcedonian Definition]] set forth. As a result of this council, the [[Oriental Orthodox]] Churches eventually become a separate communion. More immediately, [[Jerusalem]] becomes a [[List of Armenian Patriarchs of Jerusalem|Patriarchate]], and [[Dioscorus of Alexandria]] is deposed as [[Patriarch of Alexandria]] by the Council.<ref>{{cite book|first=Mark|last=DelCogliano|chapter=Acts of the Council of Calcedon (451): Selected Proceedings and the Chalcodon Definition|title=The Cambridge Edition of Early Christian Writings: Volume 4, Christ: Chalcedon and Beyond|publisher=Cambridge University Press|location=Cambridge|year=2022|url=https://books.google.com/books?id=LxhdEAAAQBAJ|pages=49–50|isbn=978-1-31651-114-5}}</ref>