Original sentence: According to 17th-century French historian du Cange, John was born in a village around the town of Debar in today North Macedonia, and had been a hegumen in a Debar monastery.When in 1018 Emperor Basil II managed to conquer Bulgaria, he decided to abolish the previously autocephalic Bulgarian Orthodox Church, establishing the Archbishopric of Ohrid, which was in effect downgrading of the Bulgarian Patriarchate and corresponded to the newly formed theme of Bulgaria
Edited sentence: According to 17th-century French historian du Cange, John was born in a village around the town of Debar in present-day North Macedonia.Prior to this he had been hegumen in a Debar monastery.When in 1018 Emperor Basil II managed to conquer Bulgaria, he decided to abolish the previously autocephalic Bulgarian Orthodox Church, establishing the Archbishopric of Ohrid, which was in effect downgrading of the Bulgarian Patriarchate and corresponded to the newly formed Theme Bulgaria, which covered the western part of Bulgaria