Banks were taking major financial risks, including investing in stocks and bonds. At that time, there were few limits, and fewer regulations, to require banks to be cautious or to protect their customers' money. When the stock market crashed in 1929, many of the banks that had not set aside enough capital to cover their losses in case of an emergency found themselves out of money and had to close; their customers, who in most cases had no idea the banks were making risky investments, also lost everything.
The Germans hoped to break through the Allied line and drive all the way to Antwerp, which is one of the very largest ports in the world, and was just coming online as the Allied supply depot for the eventual drive into the heart of Germany. The attack fell almost entirely on American troops, with the spearpoint at the juncture between the US 9th Army to the north and US 1st Army to the south. Perhaps some Germans dreamed of being able, after breaking through, to turn forces both north and south and "roll up" both segments of the now severed Allied line, but this was hardly realistic. (The British and Canadians were to the north of the US 9th Army, at the extreme northern end of the Allied line). The Germans gathered a powerful force for the attack, but one feature of their plan points up the desperation of the entire shceme: its success depended on capturing enough Allied gasoline to keep their tanks moving, because they had very little of their own. As events played out the attacking Germans, though they did break through, were never able to get past the next natural obstacle in their path, the Meuse River.
Bootleggers sold illegal alcohol to consumers and helped to bypass the laws.
they wanted America to defeat the central powers
that America was a "melting pot"
The Scopes Trial was about teaching the theory of evolution in public schools.
the negotiation of the "Gentlemen's Agreement"
extreme, reckless charges that caused people to lose their jobs and destroyed their reputations