How does fitzgerald use setting in the exposition of this passage?

PASSAGE:

My house was at the very tip of the egg, only fifty yards from the Sound, and squeezed between two huge places that rented for twelve or fifteen thousand a season. The one on my right was a colossal affair by any standard – it was a factual imitation of some Hotel de Ville in Normandy, with a tower on one side, spanking new under a thin beard of raw ivy, and a marble swimming pool, and more than forty acres of lawn and garden. It was Gatsby’s mansion.

—The Great Gatsby, F. Scott Fitzgerald

1) To establish the geographical context

2) To establish the historical context

5) To create atmosphere

6) To suggest possible conflicts

i think it is who. im not sure to be honest

the manager emerges. taking marlow aside, he says they have done all they can for kurtz. he adds that kurtz did more harm than good for the company. his actions were too "vigorous" for the moment. the manager says that kurtz was unethically gathering ivory by exploiting the locals. this, of course, is rather ironic coming from a guy who makes his living by exploiting the locals in the worst ways.

explanation: