Schism of East and West

Schism of East and West,

division between the Orthodox Eastern ChurchOrthodox Eastern Church,
community of Christian churches whose chief strength is in the Middle East and E Europe. Their members number some 300 million worldwide. The Orthodox agree doctrinally in accepting as ecumenical the first seven councils (see council, ecumenical) and in
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 and the Roman Catholic ChurchRoman Catholic Church,
Christian church headed by the pope, the bishop of Rome (see papacy and Peter, Saint). Its commonest title in official use is Holy Catholic and Apostolic Church.
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. See ChristianityChristianity,
religion founded in Palestine by the followers of Jesus. One of the world's major religions, it predominates in Europe and the Americas, where it has been a powerful historical force and cultural influence, but it also claims adherents in virtually every country of
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; Ferrara-Florence, Council ofFerrara-Florence, Council of,
1438–45, second part of the 17th ecumenical council of the Roman Catholic Church; the first part was the Council of Basel, canonically convened but after 1437 schismatic (see Basel, Council of).
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; Leo IX, SaintLeo IX, Saint,
1002–54, pope (1049–54), a German named Bruno of Toul, b. Alsace; successor of Damasus II. A relative of Holy Roman Emperor Henry III, he was educated at Toul and was made bishop there in 1027.
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; Lyons, Second Council ofLyons, Second Council of,
1274, 14th ecumenical council of the Roman Catholic Church. It was summoned by Pope Gregory X to discuss problems in the Holy Land, to remove the schism of East and West, and to reform the church.
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; papacypapacy
, office of the pope, head of the Roman Catholic Church. He is pope by reason of being bishop of Rome and thus, according to Roman Catholic belief, successor in the see of Rome (the Holy See) to its first bishop, St. Peter.
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; PhotiusPhotius
, c.820–892?, Greek churchman and theologian, patriarch of Constantinople, b. Constantinople. He came of a noble Byzantine family. Photius was one of the most learned men of his time, a professor in the university at Constantinople and, under Byzantine Emperor
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.