Within the vastness of Roman Empire, the Bela krajina was but a tiny area somewhere on or along the border of Roman provinces of Pannonia and Dalmatia. It was a part of the countryside, where the majority of the population was made up of older tribes and communities, which gradually accepted Roman culture and Latin language. After the conquest began the romanization, which brought the population of Bela Krajina even closer to the culture of the empire. Older settlements, such as Črnomelj, Šlemine and Kučar, were remodeled and reorganized by the Romans; smaller settlements, villages, began to live as part of the vast Roman countryside. Bela krajina is bounded in the south and east by the river Kolpa, an important river along which communication, traffic and the transport of people and various goods of the Roman Empire took place. Along this river Christianity came to Bela Krajina sometime in the beginning of the 4th century.
