You do have a reading comprehension problem. I stated that the British confirmed, in the sentence in question, that "principle of self determination" for the people of Class A Mandates as stated in Article 22 of the Covenant of the League of Nations was contravened by Britain at the expense of the Christians and Muslims of Palestine. What there is no cure for is your lack of intelligence and your inability to communicate without spouting obscenities and hurling personal insults. I suspect it has to do with your self-esteem issues and cowardice. In person you wouldn't dare behave as you do online.
Right after this was said
176. With regard to the principle of self-determination, although international recognition was extended to this principle at the end of the First World War and it was adhered to with regard to the other Arab territories, at the time of the creation of the "A" Mandates, it was not applied to Palestine,