How did William get control of Dover and England?

William the Conqueror gained control of Dover and England following his victory at The Battle of Hastings in 1066. After defeating King Harold II, William secured his claim to the English throne and initiated a campaign to consolidate his power across England. Dover, strategically important due to its location, was taken and fortified, serving as a key stronghold for William's rule. His control was further solidified through the construction of castles and the establishment of feudalism, which helped him manage and govern the territory effectively.