Complex sentence: Myth provides explanations for this confrontation in assuming that their king Telephus was married to Laodice the daughter of King Priam, and that Paris and Helen had stopped in Mysia on their way to Troy and had asked Telephus to fight off the Achaeans should they come.
Split into simpler sentences: Myth provides explanations for this confrontation in assuming that their king Telephos was married to Laodice, the daughter of King Priam. Moreover, Paris and Helen had stopped in Mysia on their way to Troy, and had asked Telephos to fight off the Achaeans should they come.