Because he wouldn't recognize his authority as a pope.
The Eastern Orthodox Church.
If the place is Constantinople then the answer is: because he wouldn't recognize his authority as a pope.
Pope Benedict IX
Pope Leo IX was born on June 21, 1002.
Pope Leo IX was born on June 21, 1002.
Another answer from our community:because despite leo's arguments many church leaders in esatern europe most notably the byzantine patriarch michael cerularius refused to recognize the supremacy of the pope
Pope Leo IX died on April 19, 1054 at the age of 51.
The Orthodox Church, as we know it today, originated by accident to some extent, when the unified Christian Church split in 1054, to form the Catholic Church in the west and the Orthodox Church in the east. Pope Leo IX sent Cardinal Humbert as legate to Constantinople with instructions to excommunicate Patriarch Michael if he did not accede to certain demands. This act led to the Great Schism of 1054 and the formation of the Roman Catholic Church and the Greek Orthodox Church that we know today. It could therefore be said that Leo IX started Orthodox Christianity.However, it was the direct act of Humbert in purporting to excommunicate Michael that led to the split. Michael was unable to excommunicate Leo in retaliation, as Leo had already died at the time of this event, so Michael had to satisfy himself with excommunicating the legate himself. As Leo was no longer alive, Humbert could have stayed his hand until a new pope was elected, and by not doing so was also responsible for the Schism and the formation of the two Churches out of the former unified Christian Church. In all of this, Patriarch Michael also bears some responsibility, being partly responsible for the outcome, although his hand was forced.No one person was responsible for the East-West Schism and the separation of the Roman and Greek Churches, but we can attribute the start of the modern Orthodox Christianity to Pope Leo IX, Cardinal Humbert and Patriarch Michael.
The Bishop of Rome was considered to be supreme in the order of Catholic church hierarchy. The man who held this title in 1054 AD was St. Leo IX. His reign lasted from 1049-1054 and Victor II took over on 1055.
Pope Leo IX was born on June 21, 1002 and died on April 19, 1054. Pope Leo IX would have been 51 years old at the time of death or 1013 years old today.
Pope Leo IX died on April 19, 1054 at the age of 51.
Pope Leo IX believed, as does the Bishop of Rome today, that Church officials should answer to him as he is the officially appointed Vicar, on earth, of the Head of the Catholic Church. As the Vicar of Christ occupying the Seat of Peter, he has the sacred duty and obligation to govern Church and to insure orthodoxy in all things. Is it unreasonable? No, it is not; we can liken his position to that of a president who has to maintain the laws of his country - who can only do this if people answer to him (as provided for in the constitution), so too is it with the Bishop of Rome.