I'm not sure about the Great Britain and Us conflict but I do know that the Mexican American war was the war for the possession of Texas? That may be a contrast you may include. I hope this helps.
Answer:
Ralph says, in chapter 9, that the boys are going to Jack's tribe so they can have fun and act like children. He says the boys are leaving him so they can hunt, pretend to be a tribe, and put on war paint. Jack offers the boys excitement and lures them with food from his hunts.
Some people are insecure, or downright untrustworthy of their surroundings. Usually, it's not your fault if they are fake towards you. They have usually adapted their fake selves on others that it becomes a normality.
Hope this helps!