Answer:
For William to deal with a rebellion well, it was essential that he responded quickly to prevent the rebellion from spreading, was able to apprehend the leaders to prevent any further disturbances, and take measures to ensure that such a rebellion could not happen again.
William defeated the rebellion but he still didn't trust the English people. In the north-east of England, from 1069 to 1070, he ordered villages to be destroyed and people to be killed. Herds of animals and crops were burnt.