what was a major effect of the decline of the roman empire
Fall of the Western Roman Empire The Roman Empire was not only a political unity enforced by violence. It was also the combined and elaborated civilization of the Mediterranean basin and beyond. It included manufacture, trade, and architecture, widespread secular literacy, written law, and an international language of science and literature.[218] The Western barbarians lost much of these higher cultural practices, but their redevelopment in the Middle Ages by polities aware of the Roman achievement formed the basis for the later development of Europe.[219]
Byzantine Empire The borders of the Empire evolved significantly over its existence, as it went through several cycles of decline and recovery. During the reign of Justinian I (r. 527–565), the Empire reached its greatest extent after reconquering much of the historically Roman western Mediterranean coast, including North Africa, Italy, and Rome itself, which it held for two more centuries. During the reign of Maurice (r. 582–602), the Empire's eastern frontier was expanded and the north stabilised. However, his assassination caused the Byzantine–Sasanian War of 602–628, which exhausted the Empire's resources and contributed to major territorial losses during the Early Muslim conquests of the seventh century. In a matter of years the Empire lost its richest provinces, Egypt and Syria, to the Arabs.[5]