Why Did Jack from His Own Group?

Why does Jack start his own tribe? From the beginning of the novel, Jack and Ralph both want to be leader of the boys, and disagree not only about who the leader should be, but what style of leadership is most effective. ... He insists that Ralph is a coward and that he himself would be a better leader.

When did Jack break away from the group?

In chapter 8 of William Golding's Lord of the Flies, the conflict between Jack and Ralph deepens when Ralph expresses doubt that even Jack and his hunters could face the beast. Jack angrily leaves the group, taking some of the other boys with him.

Why did Jack beat his tribe members?

Jack begins acting ever more like a cruel dictator to his own tribe members, having one of the boys tied up and beaten for angering him. He plans a raid on Ralph's camp to get fire for another pig roast and tries to convince his uneasy followers that they had beaten but not killed the beast the previous night.