Vakaga is one of the 20 prefectures of the Central African Republic. Its capital is Birao. It covers an area of 46,500 km² and has a population of 52,255. The extremely low population density, 1.1 people/km², is a result of the capture of the majority of the region's inhabitants by slave-traders from the Sudan in the second half of the nineteenth century. Vakaga …Vakaga is one of the 20 prefectures of the Central African Republic. Its capital is Birao. It covers an area of 46,500 km² and has a population of 52,255. The extremely low population density, 1.1 people/km², is a result of the capture of the majority of the region's inhabitants by slave-traders from the Sudan in the second half of the nineteenth century. Vakaga is known for its oil reserves.