Answer:
Both disagreed over who should run the church. Pope claimed power over all churches but Byzantines believed their bishops were equal to the pope. Around A.D. 700 Byzantine emperor refused to help the pope invade Italy, this angered the pope. He received help from the Franks and gave Charlemagne, leader of the Franks the title of Emperor. In A.D. 1054 the pope and patriarch of Constantinople excommunicated each other.
Step-by-step explanation: