Ancient times

Celts and Illyrians inhabited the territory of Slovenia in ancient times. The Roman Empire established its rule in the region in the 1st century, after 200 years of fighting with the local tribes. The most important ancient Roman cities in this area included: Celeia (now Celje), Emona (Ljubljana), Nauportus (Vrhnika), Poetovio (Ptuj). The modern country's territory was split among the Roman provinces of Dalmatia, Italia, Noricum, and Pannonia.