The
Slavs
The Slavs or Slavic people are groups of people who speak Slavic languages. Slavs are geographically distributed throughout the northern parts of Eurasia; they predominantly inhabit Central Europe, Eastern Europe, Southeastern Europe, and ...
were
Christianized
Christianization (or Christianisation) is a term for the specific type of change that occurs when someone or something has been or is being converted to Christianity. Christianization has, for the most part, spread through missions by individu ...
in waves from the 7th to 12th century, though the process of replacing
old Slavic religious practices began as early as the 6th century. Generally speaking, the monarchs of the
South Slavs
South Slavs are Slavic people who speak South Slavic languages and inhabit a contiguous region of Southeast Europe comprising the eastern Alps and the Balkan Peninsula. Geographically separated from the West Slavs and East Slavs by Austria, ...
adopted Christianity in the
9th century
The 9th century was a period from 801 (represented by the Roman numerals DCCCI) through 900 (CM) in accordance with the Julian calendar.
The Carolingian Renaissance and the Viking raids occurred within this period. In the Middle East, the H ...
, the
East Slavs
The East Slavs are the most populous subgroup of the Slavs. They speak the East Slavic languages, and formed the majority of the population of the medieval state Kievan Rus', which they claim as their cultural ancestor.John Channon & Robert Huds ...
in the
10th, and the
West Slavs
The West Slavs are Slavic peoples who speak the West Slavic languages. They separated from the common Slavic group around the 7th century, and established independent polities in Central Europe by the 8th to 9th centuries. The West Slavic langu ...
between the 9th and 12th century.
Saints Cyril and Methodius
Cyril (; born Constantine, 826–869) and Methodius (; born Michael, 815–885) were brothers, Byzantine Christian theologians and missionaries. For their work evangelizing the Slavs, they are known as the "Apostles to the Slavs".
They are ...
( 860–885) are attributed as "Apostles to the Slavs", having introduced the Byzantine-Slavic rite (
Old Slavonic
Old Church Slavonic or Old Slavonic ( ) is the first Slavic literary language and the oldest extant written Slavonic language attested in literary sources. It belongs to the South Slavic subgroup of the Balto-Slavic branch of the Indo-European ...
liturgy) and
Glagolitic alphabet
The Glagolitic script ( , , ''glagolitsa'') is the oldest known Slavic alphabet. It is generally agreed that it was created in the 9th century for the purpose of translating liturgical texts into Old Church Slavonic by Saints Cyril and Methodi ...
, the oldest known Slavic alphabet and basis for the
Early Cyrillic alphabet
The Early Cyrillic alphabet, also called classical Cyrillic or paleo-Cyrillic, is an alphabetic writing system that was developed in Medieval Bulgaria in the Preslav Literary School during the late 9th century. It is used to write the Chur ...
.
The simultaneous missionary efforts to convert the Slavs by what would later become known as the
Catholic Church
The Catholic Church (), also known as the Roman Catholic Church, is the List of Christian denominations by number of members, largest Christian church, with 1.27 to 1.41 billion baptized Catholics Catholic Church by country, worldwid ...
of
Rome
Rome (Italian language, Italian and , ) is the capital city and most populated (municipality) of Italy. It is also the administrative centre of the Lazio Regions of Italy, region and of the Metropolitan City of Rome. A special named with 2, ...
and the
Eastern Orthodox Church
The Eastern Orthodox Church, officially the Orthodox Catholic Church, and also called the Greek Orthodox Church or simply the Orthodox Church, is List of Christian denominations by number of members, one of the three major doctrinal and ...
of
Constantinople
Constantinople (#Names of Constantinople, see other names) was a historical city located on the Bosporus that served as the capital of the Roman Empire, Roman, Byzantine Empire, Byzantine, Latin Empire, Latin, and Ottoman Empire, Ottoman empire ...
led to a 'second point of contention between Rome and Constantinople', especially
in Bulgaria (9th–10th century).
This was one of many events that preceded the
East–West Schism
The East–West Schism, also known as the Great Schism or the Schism of 1054, is the break of communion (Christian), communion between the Catholic Church and the Eastern Orthodox Church. A series of Eastern Orthodox – Roman Catholic eccle ...
of 1054 and led to the eventual split between the
Greek East and Latin West
Greek East and Latin West are terms used to distinguish between the two parts of the Greco-Roman world and of medieval Christendom, specifically the eastern regions where Greek was the ''lingua franca'' (Greece, Anatolia, the southern Balkans, ...
.
The Slavs thus became divided between
Eastern Orthodoxy
Eastern Orthodoxy, otherwise known as Eastern Orthodox Christianity or Byzantine Christianity, is one of the three main Branches of Christianity, branches of Chalcedonian Christianity, alongside Catholic Church, Catholicism and Protestantism ...
and
Roman Catholicism
The Catholic Church (), also known as the Roman Catholic Church, is the List of Christian denominations by number of members, largest Christian church, with 1.27 to 1.41 billion baptized Catholics Catholic Church by country, worldwid ...
. Closely connected to the competing missionary efforts of the Roman Church and the Byzantine Church was the
spread of the Latin and
Cyrillic script
The Cyrillic script ( ) is a writing system used for various languages across Eurasia. It is the designated national script in various Slavic languages, Slavic, Turkic languages, Turkic, Mongolic languages, Mongolic, Uralic languages, Uralic, C ...
s in Eastern Europe.
The majority of Orthodox Slavs adopted Cyrillic, while most Catholic Slavs adopted the Latin, but there were many exceptions to this general rule.
In areas where both Churches were proselytising to pagan Europeans, such as the
Grand Duchy of Lithuania
The Grand Duchy of Lithuania was a sovereign state in northeastern Europe that existed from the 13th century, succeeding the Kingdom of Lithuania, to the late 18th century, when the territory was suppressed during the 1795 Partitions of Poland, ...
, the
Croatian Duchy and the
Principality of Serbia
The Principality of Serbia () was an autonomous, later sovereign state in the Balkans that came into existence as a result of the Serbian Revolution, which lasted between 1804 and 1817. Its creation was negotiated first through an unwritten agre ...
, mixtures of languages, scripts and alphabets emerged, and the lines between Latin Catholic (''Latinitas'') and Cyrillic Orthodox literacy (''Slavia Orthodoxa'') were blurred.
Examples

*
Christianization of Bulgaria
The Christianization of Bulgaria was the process by which 9th-century medieval Bulgaria converted to Christianity. It reflected the need of unity within the religiously divided Bulgarian state as well as the need for equal acceptance on the in ...
(officially in 864)
*
Christianization of Moravia
The Christianization of Moravia refers to the spread of the Christian religion in the lands of medieval Moravia (Great Moravia).
What modern historians designate as Great Moravia was a Slavic peoples, Slavic state that existed in Central Europe f ...
(officially after 863)
*
Christianization of Serbs (accounted Christian as of about 870)
*
Christianization of Duchy of Croatia (by the 9th century)
*
Christianization of Bohemia (884)
*
Christianization of Poland
The Christianization of Poland ( ) refers to the introduction and subsequent spread of Christianity in Poland. The impetus to the process was the Baptism of Poland ( ), the personal baptism of Mieszko I, the first ruler of the future Polish st ...
(966)
*
Christianization of Kievan Rus'
The Christianization of Kievan Rus' was a long and complicated process that took place in several stages. In 867, Patriarch Photius of Constantinople told other Christian patriarchs that the Rus' people were converting enthusiastically, but his ...
(988)
*
Christianization of Pomerania
Pomerania during the Early Middle Ages, Medieval Pomerania was converted from Slavic paganism to Christianity under Bolesław III Wrymouth, by bishop Otto of Bamberg in 1124 and 1128 (Duchy of Pomerania), and in 1168 by Absalon (Principality of R� ...
(1124)
See also
*
Outline of Slavic history and culture
Topical outline of articles about Slavic history and culture. This outline is an overview of Slavic topics; for outlines related to specific Slavic groups and topics, see the links in the Other Slavic outlines section below.
The Slavs are a ...
*
Slavic paganism
Slavic paganism, Slavic mythology, or Slavic religion refer to the religious beliefs, myths, and ritual practices of the Slavs before Christianisation, which occurred at various stages between the 8th and the 13th century.
The South Slavs, who ...
*
Eastern Orthodoxy in Europe
The Eastern Orthodoxy in Europe constitutes the second largest Christian denomination. European Eastern Orthodox Christians are predominantly present in Eastern and Southeastern Europe, and they are also significantly represented in diaspora ...
*
Catholic Church in Europe
The Catholic Church in Europe is part of the worldwide Catholic Church in full communion with the Holy See in Rome, including represented Eastern Catholic Catholic missions, missions. Demographically, Catholics are the largest religious group in ...
*
Christianisation of the Germanic peoples
The Germanic peoples underwent gradual Christianization in the course of late antiquity and the Early Middle Ages. By CE 700, England and Francia were officially Christian, and by 1100 Germanic paganism had also ceased to have political influence ...
*
Golden Age of medieval Bulgarian culture
*
Old Bulgarian
Old Church Slavonic or Old Slavonic ( ) is the first Slavic literary language and the oldest extant written Slavonic language attested in literary sources. It belongs to the South Slavic subgroup of the Balto-Slavic branch of the Indo-European ...
*
Early Cyrillic alphabet
The Early Cyrillic alphabet, also called classical Cyrillic or paleo-Cyrillic, is an alphabetic writing system that was developed in Medieval Bulgaria in the Preslav Literary School during the late 9th century. It is used to write the Chur ...
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Eastern Orthodox Christian culture
Slavs
The Slavs or Slavic people are groups of people who speak Slavic languages. Slavs are geographically distributed throughout the northern parts of Eurasia; they predominantly inhabit Central Europe, Eastern Europe, Southeastern Europe, and ...
Slavic history
Slavic culture