The Acacian Schism was a significant division in the early Christian Church that occurred between 484 and 519 AD. It primarily involved the rivalry between the Eastern Orthodox Church and the Roman Catholic Church over theological disagreements, particularly regarding the nature of Christ. The schism was named after Acacius, the Patriarch of Constantinople, who played a key role in the conflict. The schism began when Acacius supported the Henotikon, a document aimed at reconciling differences between the two churches. However, this led to tensions, as the Pope in Rome rejected the Henotikon. The conflict resulted in a break in communion, which lasted for over thirty years, highlighting the growing divide between the Eastern and Western branches of Christianity.