... for military service. Feudalism was divided into 3 sections Serf, fief and vassal - Serf - in medieval Europe an agricultural laborer legally bound to a lord's property and obligated to perform set services for the lord. Fief - in medieval Europe, land granted in return for a sworn oath to provide specified military service. Vassal - in medieval Europe, a sworn supported of a king or a lord committed to rendering specified military service to that king or lord. The need for military security led to new military technology including the stirrup, bigger horses, and the armor and weapons of the knight. Kings and nobles granted land to a man in return for a promise to supply military service. Kings were weak because they depended on their vassals-who might very well hold fiefs from and be obliged to more than one lord - when kings went into battle this ...

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