Complex sentence: Pressed by scarcity, the citizens quarrelled among themselves, and the chiefs of the oligarchical party, being driven out, betook themselves partly to Ptolemy I Soter, king of Egypt, and partly to Thimbron.
Split into simpler sentences: Pressed by scarcity, the citizens quarrelled among themselves. The chiefs of the oligarchical party were driven out from the city, and betook themselves partly to Ptolemy I Soter, king of Egypt, and partly to Thimbron.