Due to the falling ground water levels and increasing aridness of the Cahra Magnus, raids by nomads, mostly Garamantes, became intolerable threats to Africa’s prosperous ports. In response, in 1275(522) Crvvxivs had his generals expand the borders into Africa to create a buffer. Many nomad tribes were killed and those not usually died off from the Roman monopoly of the crucial remaining oases between their natural trade routes. Trade from equatorial Africa suffered but the increased demand helped Nubian and Habasiahn markets expand further. The Kushite Patrol Legion was enlarged and now guarded most of Rome’s southern borders (though they were never concrete). Carthago and Cyrene were no longer troubled though the new regions had to become partially under the Emperor's control when officia