What were the 3 advantages for having castles in England after 1066?

After 1066, castles in England provided several key advantages. Firstly, they served as fortified strongholds, offering protection against invasions and local rebellions. Secondly, castles acted as centers of administration and control, allowing feudal lords to manage their lands and assert authority over the surrounding areas. Lastly, they symbolized power and prestige, reinforcing the social hierarchy and serving as a deterrent to potential challengers.