Conquer Medieval Europe History 2026 – Adventure Awaits, Ace the Test!

The event being tested is the moment when Western Latin Christianity and Eastern Orthodox Christianity began to diverge as separate branches. In 1054, the papal legate and the Patriarch of Constantinople excommunicated each other, a dramatic public break that symbolically and practically separated the churches. This is the East–West Schism, the moment many historians point to as the starting point of the long-lasting split between Rome and Constantinople.

Context helps: the root tensions included disagreements over papal authority (whether the pope had universal jurisdiction), liturgical practices, and doctrinal nuances such as the filioque clause and issues surrounding icon veneration. These differences had been growing for centuries, and the 1054 excommunications made the division formal, even though reunion attempts would occur later in history.

The other events involve different conflicts. The Iconoclast Controversy centered on whether religious images should be venerated within Byzantium and happened earlier. The Investiture Controversy dealt with who held the authority to appoint bishops, a dispute within Western Christendom, not the split with the East. The Great Schism of 1204 occurred later during the Fourth Crusade and deepened the rift, but it did not initiate the separation in the same way the 1054 split did.