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'Christendom', in the widest sense, refers to Christianity as a territorial phenomenon: those countries where most people are Christians are part of Christendom. In the West the word Christendom sometimes refers to Roman Catholic nations that include the "Social Reign of Christ the King," the concept that a nation is subject to the authority of the Church.

Contents

Christendom as a polity

Corpus Christianum

See also

External links

Christendom as a polity

The term 'Christendom' has been used to refer to the medieval and renaissance notion of the Christian world as a sort of social and political polity. In essence, the vision of Christendom is a vision of a Christian theocracy, a government devoted to the enforcement of Christian values, and whose institutions suffused with Christian doctrine. In this vision, members of the Christian clergy wield plenty of political clout. The specific relationship between the political leaders and the clergy can vary but, in theory, national or political divisions are subsumed under the leadership of a church institution. This vision would tempt Church leaders and political leaders alike throughout European history.
The seeds of Christendom were laid in AD 306, when Emperor Constantine I became co-ruler of the Roman Empire. Constantine issued the Edict of Milan in 313 to order the government to stop the persecution of Christians, and convoked the First Council of Nicaea in 325 whose Nicene Creed included belief in "one holy catholic and apostolic Church", possibly an interpretation of the Great Commission, see also Constantine I and Christianity. Christianity became the state religion of the Empire in 392 when Theodosius I passed legislation prohibiting the practice of pagan religions. The ''orthodox'' Church gradually became a defining institution of the Empire.
As the Western Roman Empire disintegrated into smaller feudal kingdoms and principalities, the concept of Christendom became less defined in the West and the Eastern Romans, or ''Byzantines'', came to see their nation as the last bastion of Christendom. The concept continued to have a tenuous existence in the West as the Church attempted to maintain and expand its following there. The vision would eventually take a radical turn with the rise of the Franks, a Germanic tribe that converted to the orthodox Christian faith and entered into communion with Rome. On Christmas day, AD 800, Pope Leo III made the fateful decision to switch his allegiance from the emperors in Constantinople and crowned Charlemagne, then the king of the Franks, as the emperor of what came to be known as the Holy Roman Empire. This empire created a competing definition of ''Christendom'' in contrast to the Byzantine Empire. The question of what constituted true Christendom would occupy political and religious leaders for centuries.
After the collapse of Charlemagne's empire, the Holy Roman Empire became a collection of states loosely connected to the Holy See of Rome. Tensions between the Popes and secular rulers ran high, as the pontiffs attempted to exert control over their temporal counterparts and vice versa. The idea of Christendom in the West was already greatly discredited by the time of the Renaissance Popes because of the moral laxity of the pontiffs and their willingness to seek and rely on temporal power as secular rulers did.
In the East Christendom, by contrast, became increasingly well defined as Byzantine Empire over centuries gradually lost territory to Muslim invaders causing Christianity to become ever more important to Byzantine identity. Although even after the East-West Schism which divided the Church there had always been some vague notion of a universal Christendom that included the East and the West, this unity was finally destroyed by the Fourth Crusade in which Western Christian mercenaries conquered the Byzantine capital and set the Empire on a path to annihilation. Byzantine Christians would never again feel unity with their Western counterparts.
The Reformation and the ensuing decline and breakup of the Holy Roman Empire into independent states caused the term "Christendom" to take on a more informal meaning in Western Europe signifying countries which were predominantly Christian as opposed to Islamic or pagan countries.
The term can also refer to Christians considered as a group (the "Christian World") or to the informal cultural hegemony that Christianity has traditionally enjoyed in the West.
There is another sense to the polity, with less of a secular meaning, which would have been compatible with the idea of both a religious and a temporal body: ''Corpus Christianum''.

Corpus Christianum

The Latin term 'Corpus Christianum' is often translated as ''the Christian body'', meaning the community of all Christians.
It described the pre-modern notion of the community of all Christians united under the Roman Catholic Church. This community was to be guided by Christian values in its politics, economics and social life. Its legal basis was the corpus iuris canonica (body of canon law). The Church's peak of authority over all European Christians in the Middle Ages and common endeavours of the Christian community — for example, the Crusades, the fight against Moors in Spain and that against the Ottomans in the Balkans — helped to develop this sense of communal identity against the obstacle of Europe's deep political divisions. The Corpus Christianum can be seen as a Christian equivalent of the Muslim Ummah. The concept also justified the Inquisition and anti-Jewish pogroms, to root out divergent elements and create a religiously uniform community.
This concept has been in crisis since the late Middle Ages, when the kings of France managed to establish a French national church during the 14th century and the papacy became ever more aligned with the Holy Roman Empire of the German Nation. Other developments in philosophy and events in England and Europe were also critical: the War of the Roses, the Hundred Years' War, the end of feudalism and the rise of strong, centralized monarchies presaging the modern nation-state. The Empire, due to its massive size, did represent a large portion of European Christians. Thus the Corpus Christianum was limited to the Christian community of the Empire, rather than all Christians worldwide.
The rise of Modernity and the Reformation during the early 16th century entailed the further deconstruction of the Corpus Christianum. The acceptance of different interpretations of the Bible by the Peace of Augsburg in 1555 officially ended the idea that all Christians could be united under one church. The principle of ''cuius regio, eius religio'' ("whose the region is, his religion") established the religious, political and geographic divisions of Christianity, and this was established in international law with the Treaty of Westphalia in 1648 , which finally legally ended the concept of Christian unity, i.e. the "One, Holy, Catholic, and Apostolic Church" of the Nicene Creed, but see also Ecumenism. With the Treaty of Westphalia, the Wars of Religion came to an end, and, as confirmed in the Treaty of Utrecht of 1715 the concept of the sovereign national state was born. The Corpus Christianum was replaced by something foreshadowing the modern idea of a tolerant and diverse society consisting of many different communities, see also Multiculturalism.
In this way, Western Christendom can be argued, gave birth to a new civilisation known variously as "Western Civilisation", characterised by the values of secular humanism and the separation of church and state. However, under the motto of the clash of civilizations, and the growth of Christian fundamentalism, the idea might currently experience a revival, in order to help define the West in contrast to other cultures.

See also

★ Caesaropapism

★ Caliphate, Ummah, Muslim world, divisions of the world in Islam—similar concepts in Islam

★ Christian Flag

★ Church militant and church triumphant

★ Constantinian shift

★ Ecumene

★ History of Christianity

★ Res publica christiana

★ Dominionism

External links

★ Catholic Encyclopedia: Christendom

★ Catholic Encyclopedia: Union of Christendom

★ Postchristendom.com