Simplify the following text for a Grade 9 native English-speaking person.
Original: He enjoyed an uneasy relationship with the citizens of Wells , partly because of his imposition of taxes , and felt the need to surround his palace with crenellated walls and a moat and drawbridge .
Simplified: He enjoyed an uneasy relationship with the citizens of Wells , partly because of his imposition of taxes . He surrounded his palace with crenellated walls and a moat and drawbridge .