How does the larger setting of lord of the flies reinforce its theme?

The larger setting of an isolated tropical island in "Lord of the Flies" reinforces the theme of civilization versus savagery. The lack of adult supervision and societal structure on the island allows the boys to descend into chaos and barbarism, highlighting how the absence of authority can lead to destructive behavior. The setting serves as a microcosm of society, showing the inherent struggle between the desire for order and the allure of primal instincts.