the purpose in castle was to defend and to impress
helmsley castle was more of a statley residence than a defensive castle.
There is no such thing as the castle system. There is however the caste system Is this what you are referring to?
ha
to keep enemies out
There is no significance. You should be more worried about getting laid than wondering if America has a castle system
noo idea
for protection from the british in the attack of 1901
Aryan
The previous system was to light the fire in the middle of the floor, usually on a large flat stone for the purpose, There was a hole in the roof to allow the smoke to escape.
the purpose of a control system is to manage
The purpose of an economic system is to... I don't know?