The collapse of the Indus Valley Civilizations can be attributed to the following factors. One, the trade networks declined and disappeared. This meant less work for traders and manufacturers. Two, changes in geography that caused the rivers to either dry up or change direction Three, the people abandoned the major cities. Four, without trade and access to water, people succumbed to disease and starvation.
The conch reflects culture and harmony in the movies or story 'Lord of the Flies' and has been used to decide who can speak. Jack's assumption that once the beast arrives, the conch no longer cares has a foundation in tradition.
