Which ancient people lived in the territory of Bosnia before Roman rule?

Before the arrival of the Romans in the 2nd and 1st centuries BCE, the territory of modern-day Bosnia and Herzegovina was primarily inhabited by Illyrian tribes.1

These tribes were part of a broader Indo-European people who dominated the western Balkans. Illyrian society was organized into various tribal groups that often engaged in conflicts with one another and with neighboring peoples. Following the Roman conquest, most of this region was incorporated into the Roman province of Dalmatia.21