In 1071 the Seljuk Turks, who practiced this religion, defeated the Byzantine Army at the Battle of Manzikert
Religious schism between the Orthodox and Latin Churches 
further... [DOC] [TLE] Byzantine Empire - Crystalinks [PAR] Both "Byzantine Empire" and "Eastern Roman Empire" are historiographical 
terms ... 379-395), Christianity became the Empire's official state religion and 
others such ... of much of Asia Minor to the Seljuk Turks after the Battle of 
Manzikert (1071).