Editing Christianity (section)

==== Early Middle Ages ====
With the decline and [[Fall of the Western Roman Empire|fall of the Roman Empire in the West]], the [[papacy]] became a political player, first visible in [[Pope Leo I|Pope Leo]]'s diplomatic dealings with [[Attila the Hun|Huns]] and [[Vandals]].<ref name="Gonzalez-p238" /> The church also entered into a long period of missionary activity and expansion among the various tribes. While [[Arianism|Arianists]] instituted the death penalty for practicing pagans (see the [[Massacre of Verden]], for example), [[Catholicism]] also spread among the [[Hungarians]], the [[Germanic peoples|Germanic]],<ref name="Gonzalez-p238">{{harvnb|González|1984|pp=238–242}}</ref> the [[Celts|Celtic]], the [[Baltic peoples|Baltic]] and some [[Slavic peoples]].<ref>{{harvnb|Chadwick|1995|pp=60, 130}}</ref>

Around 500, Christianity was thoroughly integrated into Byzantine and [[Ostrogothic Kingdom|Kingdom of Italy]] culture<ref>{{Cite book |last=Harari |first=Yuval Noah |title=Sapiens: A Brief History of Humankind |publisher=Penguin Random House |year=2015 |isbn=978-0-09-959008-8 |location=London |pages=243, 247 |translator-last=Harari |translator-first=Yuval Noah |author-link=Yuval Noah Harari |translator-last2=Purcell |translator-first2=John |translator-last3=Watzman |translator-first3=Haim |translator-link=Yuval Noah Harari |translator-link3=Haim Watzman}}</ref> and [[Benedict of Nursia]] set out [[Rule of Saint Benedict|his Monastic Rule]], establishing a system of regulations for the foundation and running of [[monasteries]].<ref name="Gonzalez-p238" /> [[Monasticism]] became a powerful force throughout Europe,<ref name="Gonzalez-p238" /> and gave rise to many early centers of learning, most famously in [[Ireland]], [[Scotland]], and [[Gaul]], contributing to the [[Carolingian Renaissance]] of the 9th century.

[[File:Krist spred 3.jpg|thumb|[[Christendom]] by AD 600 after its [[Spread of Christianity|spread to Africa and Europe]] from the Middle East]]
In the 7th century, [[Muslim conquest of Syria|Muslims conquered Syria]] (including [[Jerusalem]]), North Africa, and Spain, converting some of the Christian population to [[Islam]], including some of the [[Christianity in pre-Islamic Arabia|Christian populations in pre-Islamic Arabia]], and placing the rest under a separate [[Dhimmi|legal status]]. Part of the Muslims' success was due to the exhaustion of the Byzantine Empire in its decades long conflict with [[Persia]].{{sfn|Mullin|2008|p=88}} Beginning in the 8th century, with the rise of [[Carolingian]] leaders, the Papacy sought greater political support in the [[Frankish Kingdom]].{{sfn|Mullin|2008|pp=93–94}}

The Middle Ages brought about major changes within the church.<ref>''Religions in Global Society''. p. 146, Peter Beyer, 2006</ref><ref>Cambridge University Historical Series, ''An Essay on Western Civilization in Its Economic Aspects'', p. 40: Hebraism, like Hellenism, has been an all-important factor in the development of Western Civilization; Judaism, as the precursor of Christianity, has indirectly had had much to do with shaping the ideals and morality of western nations since the christian era.</ref><ref>Caltron J.H Hayas, ''Christianity and Western Civilization'' (1953), Stanford University Press, p. 2: "That certain distinctive features of our Western civilization—the civilization of western Europe and of America—have been shaped chiefly by Judaeo – Graeco – Christianity, Catholic and Protestant."</ref><ref>Fred Reinhard Dallmayr, ''Dialogue Among Civilizations: Some Exemplary Voices'' (2004), p. 22: Western civilization is also sometimes described as "Christian" or "Judaeo- Christian" civilization.</ref> [[Pope Gregory the Great]] dramatically reformed the [[Ecclesiastical polity|ecclesiastical structure]] and administration.<ref>{{harvnb|González|1984|pp=244–47}}</ref> In the early 8th century, [[iconoclasm]] became a divisive issue, when it was sponsored by the [[Byzantium|Byzantine]] emperors. The [[Second Council of Nicaea|Second Ecumenical Council of Nicaea]] (787) finally pronounced in favor of icons.<ref>{{harvnb|González|1984|p=260}}</ref> In the early 10th century, Western Christian monasticism was further rejuvenated through the leadership of the great Benedictine monastery of [[Cluny Abbey|Cluny]].<ref>{{harvnb|González|1984|pp=278–281}}</ref>