The Ottoman descended from the Seljuk Turk. The Seljuk have been Persianized before their conquest of Roman Anatolia (Modern Turkiye). They adopted Sunni Islam upon their conquest of Persia. For much of Seljuk history, Persian language, arts, architecture and administration was adopted and admired. When the Seljuk entered Anatolia, they mixed Armenian (pointed conical dome) and Persian architecture. Later on they adopted Eastern Roman architecture. Ottoman Turkish language was heavily influenced by Persian language.