The feudal system of the Middle Ages that we associate with western Europe from about the 9th to the 15th century, was also a part of Albanian society. Although Albania was part of a larger empire, the Byzantine Empire, owing to wars and invasions, the power Constantinople had over Albania was not absolute. The local governors had to have their own armies for protection. Invasion was a constant threat. The commoners had to seek protection from these governors who exploited their power. They took the property of the poor either through unfair rates, or force and turned the peasants into serfs on their large estates. Thus a new aristocracy was born.
Although the emperors from Constantinople attempted to thwart this new societal development, history was not on their side. Moreover, sometimes emperors such as those of the Comneni dynasty supported feudalism, so long as the landlords agreed to go to war for the empire. With time the landlords refused even that, and they were aided by certain events, such as the capture of Constantinople in the fourth crusade (AD 1203). This crusade weakened a crumbling empire, and made it possible for a foreign invader, the Ottoman Turks, to capture Constantinople permanently in the 15th century.
They feudal lords called themselves Dukes, Princes, or Despots, and married only among their own rank; sooner marrying outside their nationality, than outside their caste. They built castles to live in and ran organized societies with their own military, city councils, or even money. Their serfs supplied them with goods as well as money. Peasant life was tough; not only did they suffer hard labor but also tyranny; and this moved them to revolt, from time to time. One revolt in 1336 first brought Turkish soldiers to Albania who were hired to crush it by Emperor, and crush it they did. At that time, peasants were freer on the mountains, as the mountains were inaccessible to the feudal landlords. These communities bred animals and were most independent. But by the same token, owing to isolation, they were less civilized.
Although Albania was often made part of larger empires, often led by outsiders, such as the Byzantine Empire, or the Bulgarian Empire, or short lived empires liked the Serbian Empire, Albanian towns always had some degree of self governance. After the 12th century, major towns like Durres, Shkodra, and Lezha became largely independent. These free cities sooner had to struggle against the feudal princes nearby than against the emperor in Constantinople. These princes waged a heavy tribute tax on these tows. But as tyrannous and miserly as the feudal princes were, it was even worse when independence was lost altogether to a foreign power, like Venice, and soon after the Ottoman Empire.