Many changes and continuity happen through the journey of the Mediterranean world, during the medieval Europe which sometimes can be referred to the “dark ages” are where a majority of the political changes and continuity transpired. Although there are various continuity there are more political changes in the Mediterranean World. This is emphasize by the replacement of an empire, expansion, and development of new political structures. The Mediterranean experience some continuity, such as laws are based off of christianity and the wealthy powerful lords always hold power in society. However, there are more changes than continuities to an extend, this is proven by the the development of feudalism, the system of relationship between the lords and peasants. Also is proven by the replacement of the Western Roman Empire by the Byzantine. Finally the amount of land expansion.Many changes occur after the decline of Western Roman Empire and its imperial structures, many cities and villages began to fall into disarray causing former cities to deform into smaller cities and many as far as a villages. With the growth of small cities, the population started to plummet and without any legal restrictions, feudalism was easily introduced. Feudalism is a system where the peasants work for a lord and in return, they get protection and land. Manorialism was also a part of feudalism, manorialism is described as who gets the land and who benefits from it. Feudalism is based on loyalty and duty, a Lord is a high ranking noble with powers and a vassal is a lower ranking who often serves the lord. Many vassals were knights or warrior who fought on horseback, knights were expected to be honest and loyal, they trained to fight by holding fighting tournaments and were expected to fight fairly. When Western Roman fall in 476 C.E, it was replaced by the Byzantine empire, although there are continuities the changes of the political construction has more. During the end of Roman, the Roman Catholic Church had complete authority over the emperor. In the east, the emperor established a system where the state had authority over the church and is to keep the two separated. The eastern Rome created the Justinian law code to replace the Roman law code. The Roman law code is a legal system of Rome and the legal development of the Twelve Tables. There is two proposition of the Roman law, the law has to be written down and cannot be judged by one person alone. Roman Laws are written so it can be easily revised in the future. The twelve tables were recorded on wood and bronze. The Justinian’s Law Code was a collection of laws written by Justinian, the emperor of the Byzantine Empire.The Code consist of existing law from Western Roman and many of Justinian new civil laws. Justinian Law code was created to prevent the Byzantine Empire from the mistake that Western Rome made. During The Byzantine Dark Ages the expansion of land dramatically declined when Justinian passed away. After Justinian passed away the territory that he conquered was lost. By the seventh century italy was under Lombard rule, Gaul belong to the Frankish, and the costal region of spain was lost to the Visigoths. When most of the byzantine land was lost the empire was unstable and couldn’t gain back the territory they’ve lost, the Byzantine Empire never returned to the Golden Ages. The amount of land that was conquered in the western Roman Empire compared to the Expansion of the Byzantine Empire after Justinian passed away shows the changes in political construction.