Complex sentence: The palace in Knossos seems to have remained largely intact, resulting in its dynasty's ability to spread its influence over large parts of Crete until it was overrun by the Mycenaean Greeks.
Split into simpler sentences: The palace in Knossos seems to have remained largely intact. This resulted in the Dynasty in Knossos being able to spread its influence over large parts of Crete, until it was overrun by Mycenaean Greeks.