Final answer:
Feudalism was the dominant political and economic system in medieval Europe that revolved around obligations between kings, vassals, and peasants.
Explanation:
Feudalism was the political and economic system that dominated the Middle Ages in Europe. It involved a system of obligations between a king, vassals who held land (fiefs), and peasants who worked the land for the vassals, creating a hierarchical structure. For example, in exchange for military service and loyalty, vassals received land from lords, and serfs worked on these lands.
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