Complex sentence: Churches and monasteries served as one of the earliest educational institutions and the Holy Trinity Monastery (Pljevlja) has been a treasure of cultural and spiritual life for the Orthodox Serbs from the Middle Ages to the present.
Split into simpler sentences: Churches and monasteries served as one of the earliest educational institutions. The Holy Trinity Monastery (Pljevlja) has been a treasure of cultural and spiritual life for the Orthodox Serbs from the Middle Ages to the present.