Answer:
the only thing i can explain rn is that for A 3 main functions of the book is To record the transfer and possession of land. After the conquest huge amounts of land in England changed hands and a record of these changes was needed to keep track.
To record the value of each estate (land owned by an individual).
To introduce a new system of taxation on each estate that allowed the king to raise more money from all landholders quickly.
edit: b i think could be- He standardised weights, measures and customs dues, which helped improve commerce and initiated important legal reforms. He also attempted to consolidate Christianity throughout his vast empire. He persuaded many eminent scholars to come to his court and established a new library of Christian and classical works.
Step-by-step explanation:
i hope this will hope a little bit and im sure some one else will come to help