What were the main features of feudalism how did feudalism change the social structure of Anglo-saxon England?

Feudalism in Anglo-Saxon England was characterized by a hierarchical system of land ownership and obligations, where the king granted land (fiefs) to nobles in exchange for military service, while peasants worked the land in return for protection. This system created a rigid social structure, with the king at the top, followed by nobles, knights, and peasants or serfs at the bottom. Feudalism shifted power dynamics, as local lords gained significant authority and autonomy, weakening the centralized power of the monarchy. Additionally, it entrenched social classes, limiting mobility and reinforcing loyalty and obligations within the feudal hierarchy.