Anyone who pledged their loyalty to a lord or king in exchange for a fief was called a

The correct answer to the question: Anyone who pledged their loyalty to a lord or king in exchange for a fief was called a:, the answer is, vassal.

Explanation:

During medieval Europe, the feudal system established a hierarchy that went thus: Pope, the kings, lords, vassals/knights, peasants and finally, the serfs. The Kings and Lords were the great landowners in feudal Europe and what they did was offer land grants to vassals, called fiefs, in exchange for loyalty to them, and in case of conflict, for armed forces. The vassal would receive the land from the King or Lord, and would expect protection from the Lord or King.

the answer should be monarchy