Answer:
It had consequences at the administrative, social, and cultural level.
Step-by-step explanation:
At the administrative level, William the Conqueror's victory at Hastings meant the Witan turned to be called the GREAT COUNCIL and it was an advisory body. Besides, the Anglo-Saxons' feudalism was improved into TERRITORIAL FEUDALISM.
At the social level, William's victory meant the disappearance of the middle class (the Thanes). A sharp differentiation between social classes emerged: Aristocracy (Barons and Knights) and the Villains.
At the cultural level, said victory meant the return to the Mediterranean civilisation since three languages were spoken (French, Latin, and English).