In the early 4th century.
Pax Romana, i'm probably wrong though.
The roman catholic church.
Rome and Constantinople became centers of Christianity. Rome became the center of Western Catholic Christianity and Constantinople became the center of Eastern, Orthodox Christianity
Christianity, specifically Catholicism, was spread all over Europe by the Roman empire, and continued after its collapse. The Catholic church centered in Rome became very important institution.
The first religious group to become political activist (although not a political party as such) were the Calvinists in what later became the Dutch Republic., rising against their Catholic Spanish King and gaining independence after an eighty year-long war.
The expression the fall of Rome refers to the fall of the western part of the Roman Empire which crumbled under the weight of the invasions by Germanic peoples. The eastern part of the Roman Empire was not affected by these invasions and continued to exist for another 1,000 years. The religion of the western part of the Roman Empire was called Latin or Western Christianity. It continued to exist and later came to be called Catholic (Christianity) and became the region of Western Europe. The religion of the eastern part of the Roman Empire also continued to exist. It was called Greek or Eastern Christianity. It come to be called Orthodox (Christianity) and became the religion of parts of Eastern Europe and Russia.
Western Europe became industrialized much earlier than Eastern Europe and the entire world, which is why Western Europe has the largest economy in the world.
cordova
Western Europe had a much stronger economy. Eastern Europe fell into poverty and more Eastern European countries became police states.
Europe became a patchwork of little areas of mini-kingdoms.
Latin Christianity became the branch of Christianity of the west because it became the Christianity of Italy and, through this, spread in the western part of the Roman Empire. It later spread throughout Western Europe. Pagan or Arian Christian Germanics invaded the empire in the west. However, the Visigoths who took over Spain and the Franks converted to Latin Christianity. The kingdom of the Franks covered Gaul and also parts of central Germany which had never been under the Romans. This helped to spread Christianity there. Charlemagne invaded northern Germany and sent missionaries to covert the pagans in that area. Another element that spread of Latin Christianity was the creation of the monastic orders. Monks became missionaries who worked throughout Western Europe. Pope Gelasius I sent missionaries to Ireland in the 490s. Pope Gregory I sent out to convert the Angles and the Saxons in England and sent missionaries there in the 590s. As for the domination of society, Medieval Europe was deeply religious. The church had a dominant presence through its influence on the populace, its links with kings and aristocrats and the pope being seen as the head of Christendom.
Berlin.