Original sentence: After a large fall, Doclea was incorporated into the unified Serbian state, where it remained until the fall of the Serbian emperor, tsar Stefan Uroš IV Dušan, where it became the state of Zeta.Duklja or Diokletija (Modern Serbian variations: Дукља or Диоклетија; Latin: Doclea or Diocleia; Greek: Διοκλεισ) was a Slavic medieval state with hereditary lands roughly encompassing the territories of the Zeta River, Skadar Lake and the Boka bay and bordering with Travunia at Kotor
Edited sentence: After a large fall, Doclea was forcibly annexed by the Serbian state, where it remained until the fall of the Serbian emperor, tsar Stefan Uroš IV Dušan, where it became the state of Zeta.Duklja or Diokletija (Modern Serbian variations: Дукља or Диоклетија; Latin: Doclea or Diocleia; Greek: Διοκλεισ) was a Catholic Slavic medieval state with hereditary lands roughly encompassing the territories of the Zeta River, Skadar Lake and the Boka bay and bordering with Travunia at Kotor