I think because they let out so many games out
The letter following the quotation needs to be capital. This is because what the person said is also a sentence.
Example: As Mark was walking he said, "This is a beautiful day!"
Happy to help!
Fitzgerald wants to portray and characterize the US society in the 30s. By making this question about race and their opinion about it, the author intends to characterize American society as competitive, a value that is repeated throughout the story. One of the main purpose of the novel, in fact, is to show how competitive, materialistic, and full of glamour the society is, especially the people who live in East Egg like Tom and Daisy.