what is the aurthor's use of imagery in chapter 9?

Like insects, reporters and gossipmongers swarm around Gatsby's mansion after his death. They immediately busy themselves with spreading grotesquely exaggerated stories about his murder, his life, and his relationships.

In the end, while staring at the moon on his last night in West Egg, Nick imagines a primeval America, an America made for dreamers like Gatsby. The green light at the end of Daisy's dock is like the green continent of America, beckoning its legions of dreamers. Gatsby, for all his greatness, failed to realize that the American Dream was already dead when he began to dream it: his goals, the pursuit of wealth and status, had long since become empty and meaningless. Nick muses that contemporary Americans are "boats against the current, borne back ceaselessly into the past"; any attempt to progress, to move forward, is ultimately futile. 

It is important to note that the Buchanans lived in East Egg, and Gatsby in West Egg; therefore, in gazing at the green light on Daisy's dock, Gatsby was looking East. The green light, like the green land of America itself, was once a symbol of hope; now, the original ideals of the American dream have deteriorated into the crass pursuit of wealth.

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