Complex sentence: He conquers and plunders Antioch, destroys Dura-Europos and sacks the Anatolian city of Zeugma on the Euphrates, which is soon followed by a devastating fire and an earthquake, causing Zeugma to be abandoned.
Split into simpler sentences: He conquers and plunders Antioch, destroys Dura-Europos and sacks the Anatolian city of Zeugma on the Euphrates. A devastating fire and an earthquake soon follow, causing Zeugma to be abandoned.