Complex sentence: After the establishment of the Latin Empire at Constantinople in 1204, Great Wallachia was absorbed by the Greek Despotate of Epirus; later it was annexed by the Serbs, and in 1393 it fell to the Turks.
Split into simpler sentences: After the establishment of the Latin Empire at Constantinople in 1204, Great Wallachia was absorbed by the Greek Despotate of Epirus. Later it was annexed by the Serbs, and in 1393 it fell to the Turks.