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1. The council in 869 that condemned Photius who had become the patriarch of Constantinople without approval from the Vatican, thereby precipitating the schism between the eastern and western churches
   - Fourth Council of Constantinople
    
2. The sixth ecumenical council in 680-681 which condemned Monothelitism by defining two wills in Christ, divine and human
   - Third Council of Constantinople
    
3. The largest city and former capital of Turkey; rebuilt on the site of ancient Byzantium by Constantine I in the fourth century; renamed Constantinople by Constantine who made it the capital of the Byzantine Empire; now the seat of the Eastern Orthodox Church
   - Istanbul, Stambul, Stamboul
    
4. The fifth ecumenical council in 553 which held Origen's writings to be heretic
   - Second Council of Constantinople
    
5. The second ecumenical council in 381 which added wording about the Holy Spirit to the Nicene Creed
   - First Council of Constantinople

Type of: city, council, ecumenical council, metropolis, urban center [US], urban centre [Brit, Cdn]

Part of: Republic of Turkey, Turkey, Türkiye

Encyclopedia: Constantinople, Greece