Complex sentence: The country formally adopted the Christian faith in 301 A.D. Over 90% of Armenians belong to the Armenian Apostolic Church, a form of Oriental (Non-Chalcedonianism) Orthodoxy, which is a very ritualistic, conservative church, roughly comparable to the Coptic and Syrian churches.
Split into simpler sentences: The country formally adopted the Christian faith in 301 A.D. Over 90% of Armenians belong to the Armenian Apostolic Church. It is a very ritualistic, conservative church, roughly comparable to the Coptic and Syrian churches.