Around 1000 C. E., how were the Western church leaders' beliefs about church authority different from those of the Eastern church leaders?

Western Church:

Wrote and spoke in Latin

Believed that the Holy spirit was sent from father (God) to his son

Celebrated Eastern on Sunday

Accepted Dionysius system

Eastern Church:

Spoke and wrote Latin

Thought that the Holy spirit came from both father and son

Celebrated Eastern on Passover (1 week)

Muslims had a strong effect on Church so they became Constantinople's patriarch

The main cause these churches split was because of the excommunication.