I think the author is Niccolo Machiavelli.
The civil war was fought over the moral issue of slavery it was the main conflicting cause of the civil war
The Founding Fathers of the US included provisions for amending the Constitution so that it can adapt as American society changes. This group of men realized that America was going to constantly change. This is why in the preamble of the Constitution they included the fact that they were making the Constitution in order to form a "more perfect union." This phrasing indicates the the current laws they have are not perfect and that they may need to be changed later on. This is why the Founding Fathers made it so that the Senate and House of Representatives could make changes to the Constitution.
This was a mixture of things.
The increase in population from soldiers and influx of immigrants caused the need for more food to be produced and more jobs to be demanded. So farmers started over producing which led to the Dust Bowl and, eventually, the Great Depression.
