The question is meaningless. I presume you mean to ask why are Islamic controlled lands so close to Eastern Europe. The answer to that is because the prophet Mohammed and his successors tried to take over Europe, in their pursuit of world conquest and domination. Little has changed in 1,400 years.
Russia's religion in the Middle Ages was Christianity.
Eastern Orthodox Church
Eastern orthodox is the main, with more than a little Islam
Eastern Orthodox ChurchThe Orthordox ChurchEastern Orthodox ChurchRussian Orthodox Christianity which was adopted in the 10th Century. Others include Islam, Buddhism and Judaism
Before 1898, Catholicism Today, in this particular order: Santeria, Protestantism and Catholicism. We have also growing communities from the Islam, Buddhist, greek-orthodox and Jewish faiths. .
The four most common religions in the Balkans are Eastern Orthodoxy, Islam, Roman Catholicism, and Protestantism. Eastern Orthodoxy is predominant in countries like Greece, Serbia, and Bulgaria, while Islam is practiced by populations in Bosnia and Herzegovina, Albania, and Kosovo. Roman Catholicism is prominent in Croatia and Slovenia, and Protestantism has a smaller but significant presence in the region.
Muslim 40%, Orthodox 31%, Roman Catholic 15%, other 14% According to CIA
Yes, but there are other religions as well. Judaism, Islam, Catholicism and other religions are also present in Russia.
Catholicism Christian, either Roman Catholic or Protestant. The Catholics are mainly around the mediterranean, the Protestants are mainly in the North. Also there is Eastern Orthodox, Church of England & Secular societies. However, due to mass imigration and modern generations in low church attendance, Islam is closely on the rise.
Some of the major religions in Eastern Visayas, Philippines are Roman Catholicism, Protestantism, and Islam. Roman Catholicism is the predominant religion in the region, with a significant number of people practicing other Christian denominations and Islam. Traditional indigenous beliefs also persist among some communities in the region.
Religions: Christianity (mostly Eastern Orthodox, also Protestant); also Islam. However, about one-third of the people are nonreligious or atheist.
roman catholic,protestant,eastern orthodox