The practice of Orthodox Christianity in Eastern Europe was primarily an impact of the-

Option: Byzantine Empire

Explanation:

The Byzantine Empire began when Roman emperor Constantine I decided to relocate the capital of the Roman Empire from Rome to Byzantium. Byzantine Empire with Greek-influenced culture introduced to orthodox Christianity. Orthodox Christianity followed different customs that led to split from the Western Church.

Christianity in Russia began when Greek Missionaries of the Orthodox Church visited neighbouring countries. Christianity was taken to Kyivan Rus by missionaries in the 9th century. Saint Methodius and Saint Cyril were the first to start the spreading Christianity among the Slavs and converted the Bible into Slavonic. Patriarch Ignatius sending Christian bishops in Novgorod.

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