Answer;
Castles were built with strong materials to protect those inside.
Explanation;
-The main difference between castles and manor houses was that the Castles offered protection from invaders, they were built with strong material to protect those inside.
-The Manor House was residential property, and differed from castles in that it was not built for the purpose of attack or defense.
-The Manor House varied in size, according to the wealth of the lord but generally consisted of a great hall, solar, kitchen, storerooms and servants' quarters.