Aquileia was founded by the Romans as a colony in 181 BCE, during battles with the Illyrian tribes. The city was located on the Natisa River, south of the Julian Alps, several kilometres north of the lagoons. It had an important military significance at the very beginning of its existence – it was a fortress protecting the Pre-Alpine Gaul from the east, and, if necessary, enabling the support of the Venetians – solid Roman allies. The colony was granted the Latin law by the triumvirs: Publius Cornelius Scipio Nazyka, Caius Flaminius and Lucius Manilius Acidinus. Soon after its founding, it probably had approx. 20 thousand. inhabitants, most of whom were Latins.