Answer:
Excommunication to the Hagia Sohpia
Step-by-step explanation:
The threat of excommunication used by the Pope to hold his power over the Eastern Church. The Pope delivers a Bull of Excommunication to the Hagia Sophia because of its religious practices. The Western Church used Images of crucifixes, Mary, and saints where the Eastern Church forbid image. The opposition in the churches led to excommunicated between Eastern patriarch and Pope Leo IX.