tania was a major exporter of olive oil, as well as a center for the trade of ivory and wild animals conveyed to the coast by the Garamantes, while Cyrenaica remained an important source of wines, drugs, and horses. The bulk of the population in the countryside consisted of Berber farmers, who in the west were thoroughly "romanized" in language and customs. Until the 10th century the African Romance remained in use in some Tripolitanian areas, mainly near the Tunisian border.
The decline of the Roman Empire saw the classical cities fall into ruin, a process hastened by the Vandals' destructive sweep though North Africa in the 5th century. The region's prosperity had shrunk under Vandal domination, and the old Roman political and social order, disrupted by the Vandals, could not be restored. In outlying areas neglected by the Vandals, the inhabitants had sought the protection of tribal chieftains and, having grown accustomed to their autonomy, resisted re-assimilation into the imperial system.
When the Empire returned (now as East Romans) as part of Justinian's reconquests of the 6th century, efforts were made to strengthen the old cities, but it was only a last gasp before they collapsed into disuse. Cyrenaica, which had remained an outpost of the Byzantine Empire during the Vandal period, also took on the characteristics of an armed camp. Unpopular Byzantine governors imposed burdensome taxation to meet military costs, while the towns and public services—including the water system—were left to decay. Byzantine rule in Africa did prolong the Roman ideal of imperial unity there for another century and a half however, and prevented the ascendancy of the Berber nomads in the coastal region. By the beginning of the 7th century, Byzantine control over the region was weak, Berber rebellions were becoming more frequent, and there was little to oppose Muslim invasion.
Arab Islamic Libya
Tenuous Byzantine control over Libya
