The medieval slavery system was a widespread practice throughout Europe during the Middle Ages. Slaves were considered property and were often bought and sold like objects. They had few, if any, rights and were forced to work for their masters without pay. The most common form of slavery during this time was serfdom, in which peasants were required to work the land owned by the nobles in return for protection and the use of some resources.
SRC
One of the major flaws of the medieval slavery system was that it was based on a rigid social hierarchy. The nobility held most of the power and wealth, while the peasants and slaves were at the bottom of the social ladder. This created a class system that was difficult to escape and often led to abuse and exploitation of the lower classes.
Another flaw was that slavery was often justified by religious beliefs. Many people believed that it was God's will for some individuals to be born into slavery, and that it was the natural order of things. This led to a lack of compassion and empathy for slaves, and made it easier for people to justify their treatment.
Additionally, the medieval slavery system did not provide any opportunities for social mobility. Once an individual was born into a certain class, it was difficult to move up in the social hierarchy. This lack of mobility perpetuated the cycle of poverty and inequality, as slaves and peasants were unable to improve their circumstances or provide a better life for their children.
SRC
Overall, the medieval slavery system was a flawed and unjust system that perpetuated inequality and suffering. It was based on a rigid social hierarchy and justified by religious beliefs, and it did not provide any opportunities for social mobility. While it may have been a common practice at the time, it is now widely recognized as a violation of basic human rights.