Scholars have debated as to what area Paul was referring when he wrote to the "churches of Galatia." In the fourth century BC barbaric tribes called Gauls moved into the area of north central Asia Minor. This area became known as Galatia. When Rome annexed the territory in 25 BC, it became a province and its borders were greatly enlarged. The question is, when Paul uses the word Galatia, is he referring to the smaller original region or to the larger province created by Rome? The first view is known as the North Galatian theory while the latter view is known as the South Galatian theory.