Amodified version of slavery in europe during the middle ages was called ?

its serfdom i just took the test

Question: A modified version of slavery in Europe during the middle ages was called?

The correct answer is: Serfdom.

Explanation: Serfdom was a type of debt bondage. These people were generally peasant farmers who would pay a lord with labor and in exchange they could use part of the lord's land to generate their own food.  Serfdom primarily developed during the High Middle Ages in Europe but it lasted in other countries until the mid-19th century.  Serfs could not change occupation nor get married without their lord's permission and their lords could even transfer them to a new lord. They were usually very harshly treated and didn't have much legal say against the actions of their lords.