The answer would be a.The lords needed to protect their land from other nobles. Hope this helps:)
Ottoman territories were forced to pay fines for damages during the war, but Austro-Hungarian territories were not punished in any way. ... Ottoman territories came under the control of Allied powers, but Austro-Hungarian territories gained the ability to establish their own governments
Mostly likely answer is: Diplomatic Immunity.
The government system of Fuedalism. Fuedalism was a series of military and legal customs which took rise in the middle ages