All of those were decisions to attempt to unify the Church and find agreements. Church leaders spent centuries in attempts to come to an agreement with the monophysites. A small percentage went their own way. Almost all that did died out. For the most part it was one Church until the RCC went their own way. That sort of opened the door to the idea.
Any division today that still exist are due to cultural and long established Churches surviving apart from one another after the Muslim invasions and a thousand years of the Ottoman Empire.
Being under the turbin probably helped The Eastern Churches hold together. The West had no real threat to the faith to bind it.
Protestantism destroyed the Western Church.
Christianity would be stronger unified.
Any division today that still exist are due to cultural and long established Churches surviving apart from one another after the Muslim invasions and a thousand years of the Ottoman Empire.
Being under the turbin probably helped The Eastern Churches hold together. The West had no real threat to the faith to bind it.
Protestantism destroyed the Western Church.
Christianity would be stronger unified.