The main consequences of the seizure of England by William 1.

We are talking about the events of 1066 and the history of England at the end of the 11th century, these were the consequences:
The construction of castles began, which did not exist under the Anglo-Saxon princes. They housed the northern French barons, they performed administrative functions, they were given the lands of the Anglo-Saxon nobility.
French was in the office of England until the early 15th century.
Anglo-Saxon revolts were suppressed, in 1070 there was “Desolation of the North” when Yorkshire was ravaged.
The King of Scotland recognized William as King of England.
Wars with Wales.
Conducting a general census of land holdings. As a result, the “Book of the Last Judgment” was created. It is considered a unique historical source. Refers to 1086.
Ecclesiastical policy: a system of dioceses was created, almost all bishops were of French descent.