Answer:
A. Depended on serfs to work the land.
E. Ensured vassals to pay homage to the king.
Step-by-step explanation:
Feudalism was an economic, political, social and cultural organization based on land tenure, which predominated in Western Europe during the Middle Ages.
The Vassal means a subject of a sovereign. It is a concept of the Middle Ages and is related to the system of feudalism. The vassal was the individual who asked for some benefit from a superior nobleman and in return took an oath of absolute fidelity. On the other hand, the servants composed feudal society, were responsible for the sustenance of all feudal orders and subordinated to their master. The servants were responsible for the production of wealth in the feudal world. The feudal lords depended on the servants to work the land and guarantee the sustenance of the society.