The great Roman empire ended during the time of Pope Simplicius. The last Roman emperor,Romulus Augustulus,stepped down on the order of a Germanic warlord who then became King of Italy. Seeing that the Roman empire was no more,the Eastern Orthodox Bishops in Constantinople declared that they now had primacy over the Roman Church and they alone,rather than the Pope,would decide what was best for Christianity. To gain support for this move,the Eastern Church allied itself with those pesky followers of Monophysitism who believed that Jesus was only divine and not both human AND divine. All of this betrayal outraged Simplicius and he went to his grave fighting to keep primacy over all Christians and also to keep the faith pure and free of heresy. His successor Pope Felix III would continue the fight which will eventually lead to a schism between west and east for the next thirty years.
I can’t overstate how blessed we were to have such a man of strong faith and wisdom in charge during this time,because if the Pope gave ground and let the Eastern Church(with all of its heresies at the time),take over guidance of Christianity,it would have basically changed all of Western history from that point on. Our calendar would be different,our maps would be different,our lives would be different. These men that are our Popes are the guardians of the truth of Jesus and his teachings. Pope Simplicius is buried in Saint Peter’s Basilica and his feast day is March 10th.