What was the result of the invasion led by william the conqueror?

1) (re-)distribution of land (to extremely big extent), 2) arrival of new (not anglo-saxon) aristocracy, 3) new (Norman/French) aristocracy, 4) French was introduced as a language of the court and aristocracy, 5) William the Conqueror started building keeps and castles and his successors continues with it as well, 6) introduction of new royal dynasty called "Norman dynasty"

Explanation: William the Conqueror founded Norman dynasty which was followed by Plantagenet dynasty. Identity of Norman (and some Plantagenet) kings was still French, i.e. they were frequently burried in Frańce and not in Westminster Abbey.

the answer should be monarchy

because it !