Complex sentence: During the 3rd century Issa founded the emporia Tragurion (Traù, now Trogir) and Epetion (Stobreč) on the Illynan mainland, the most notable colony being Aspálathos: the modern-day city of Split.
Split into simpler sentences: During the 3rd century Issa founded the emporia Tragurion (Traù, now Trogir) and Epetion (Stobreč) on the Illynan mainland. Its most notable colony is Aspálathos, the modern-day city of Split.