The answer would be immagrants started coming in to the US
Germany lost World War I. In the 1919 Treaty of Versailles, the victorious powers (the United States, Great Britain, France, and other allied states) imposed punitive territorial, military, and economic provisions on defeated Germany. In the west, Germany returned Alsace-Lorraine to France.
Gatsby does not partake in DRINKING
Gatsby met Dan Cody and what impacts Cody had on Gatsby's life. One of the impacts that Cody had was that he, indirectly, made Gatsby not want to drink much. Gatsby doesn't want to drink too much because he doesn't want to be like Cody was when he drank, in the book Gatsby had had to be Cody's "jailer" at times. That implies that Cody got out of control when he was drunk. Gatsby's character does not seem to be one that would enjoy being out of control and I think this is why he hardly drank.
answer: the italian peninsula :)