Why were medieval manors nearly self-sufficient? slaves were brought in to run the manor efficiently. nobles allowed serfs to earn freedom as long as the manor ran smoothly. the establishment of a middle class provided a stable economy and thus little direction was needed. it was not necessary to hire anyone on the manor and most of the materials needed were on the premises.

It was not necessary to hire anyone on the manor and most of the materials needed were on the premises.

Explanation:

Most manors would have enough cato, servs (or slaves), crops, water, and all that was needed on its surroundings. By having food, fed workers, and power to control the surroundings, the manors barely needed something from outside of the land.

answer: your option is d

explanation: