Individuals did not attack castles, but armies and it was to take the land and power from the man who had them. Western Europe was made up of small sections controlled by nobles who owned their power to a king. These small parts would often change hands when another man wanted the land and power. The strongest won. It is that simple.
bricks or wood
You did not include any of the 'following'.
The Roman did not have any castles. Castles emerged after the end of Roman civilisation, during the Middle Ages.
your but-hole now leave me alone
yes
Castles in the Middle Ages were used to keep out enemies.
castles were important in the middle ages mainly in 1066 and onwards
No castles have been built since the middle ages
the castles in the middle ages were made of stone not wood because wood would burn easily.
motte and bailey castles
they haven't and the middle ages is irrelevant
Fortified dwellings of the Middle Ages were castles and fortified manor houses. Not all dwellings were castles, however.
Castles in the early middle ages were motte and bailey castles- a motte was a large mound and a bailey was like a courtyard. These developed into the standard castle with strong stone walls etc.
Castles were developed in the middle ages because people thought that the kings and queens should live more wealthier than the peasant's. Therefore, they built castles.
Castles have a rather distinctive architecture, and were nearly all built in the Middle Ages. They were also politically and militarily important in the time.
There is a link below to a website on famous medieval castles.
bricks or wood