During the crusades which event was most directly responsible for increased tensions between Byzantine and western Christians?

Question

A. The Byzantine emperor asked the pope for help this request launched the first crusade but was not the most important cause of conflict
B. The crusaders failed to retake the holy land while the crusades were ultimately unsuccessful this was not the main cause of distrust between the two branches of Christianity
C. Crusaders attacked Constantinople on their way to Egypt the sack of Constantinople in 1204 during the fourth crusade worsened the relationship between the orthodox and Roman Catholic Churches and weakened the Byzantine empire
D. The crusaders won protection in the holy land only for western pilgrims Richard I was able to briefly win protection for Christian pilgrims but this was not the cause of conflict between the Byzantine and western churches

Answer 1

The event most directly responsible for increased tensions between Byzantine and western Christians during the Crusades was:

C. Crusaders attacked Constantinople on their way to Egypt; the sack of Constantinople in 1204 during the Fourth Crusade worsened the relationship between the Orthodox and Roman Catholic Churches and weakened the Byzantine Empire.

This event had a profound impact on the relations between the two Christian branches, leading to lasting mistrust and animosity. The Fourth Crusade, which was originally intended to recapture the Holy Land, instead culminated in the sacking of Constantinople, further deteriorating the already strained relationship between the Eastern Orthodox Church and the Roman Catholic Church.