John Romanides (1927 – 2001) was a prominent 20th century Orthodox Christian theologian, priest, and writer. He was Professor of Dogmatic Theology at the Holy Cross Theological School in Brookline, MA and later Professor of Dogmatic Theology at the University of Thessaloniki, Greece. Romanides traced the 1054 split between the Eastern and Western Christian churches to a long political, military, and ethnic struggle between the Roman East and the Germanic conquerors of the Roman West. These German tribes started with the Visigoths in AD 410, culminating with Charlemagne and the Franks in AD 800. The Great Schism of 1054 had more to do with a Frankish – Eastern Roman power struggle than it did with religious doctrine. The church was simply used as a tool in that imperial struggle.
“The schism between Eastern and Western Christianity was not between East and West Romans, it was a split between East Romans and the conquerors of the West Romans.” ~ Franks, Romans, Feudalism, and Doctrine: An Interplay Between Theology and Society