What are the purpose and effect of Jack's generosity with the meat he and the hunters obtained?

Jack's generosity with the meat serves to establish his power and authority within the group by demonstrating his ability to provide for them. This act also helps to solidify his control over the boys and creates a sense of loyalty among them as they are dependent on him for food. Additionally, by sharing the meat, Jack gains the admiration and respect of the other boys, making it easier for him to manipulate and influence them later on.