The areas of Europe that likely believed in Christianity was the western part of Europe, which is Spain and Italy.
Europe and the Western Hemisphere
The Byzantines spread Orthodox Christianity to those areas.
As the largest religion in the world with its 2.1 billion adherents, Christianity is prevalent in Europe, the America's, and Africa.
The Byzantines spread Orthodox Christianity to those areas.
Throughout the world with its over 2.1 billion adherents. Major areas for Christianity were Europe and the English-speaking nations, however, these are in decline - particularly in Europe - while the Spanish nations of South America and the African nations are growing quite quickly.
By AD 400, Christian areas were mainly concentrated in Europe, Asia, and Africa. Christianity had spread throughout the Roman Empire in Europe, reached the eastern regions of Asia, and had significant communities in North Africa as well.
Christianity is a worldwide religion with over 2.1 billion adherents. They are well established in Western Europe, North and South America. They are growing quickly in Africa. It is predominant in Australia, New Zealand, and Russia.
It was within 10 years after the 1st Pentecost in June, 31 AD that the Apostles began speading the Word of God throughout the adjacent areas - which included Greece and Rome. It really began to spread throughout Europe after Constantine of Roman accepted Christianity as a religion of the Empire.
Christianity
AnswerPaul, in his epistles, mentions travelling throughout Greece, including Macedonia. He seems likely to have gone to Rome and to have wished to visit Spain. Clement of Rome (1 Clement) seems to have believed that Paul went to Rome and then to Spain.Acts of the Apostles says that Paul undertook an an important missionary journey through Cyprus, but many scholars doubt that this journey was really historical, especially as Paul's own account seems to rule it out.
A lot of Christianity is based in the areas of Israel/Palestine, though mainly Israel.
Rome practiced Christianity in 600 CE