Slavery helped contribute to the south's cotton boom during the 1800's. this cotton boom helped raise the economy up. But during Civil War slavery was banned from the U.S. leaving the south after their defeat to lose the slaves and dropping the south into an economic depression.
The election of Andrew Jackson dramatically changed the US for several different reasons including:
1) He was an advocate for the "average citizen"- Andrew Jackson was dubbed the "Champion of the Common Man." He received this title because he was not an inherently wealthy man nor was he part of a family that was consistently in politics. Rather, he came from humble beginnings. This story inspired many American citizens.
2) His policies resulted in increased democracy in the US- Jackson helped to get rid of property qualifications and other restrictions to ensure that white farmers had the right to vote, regardless of how much property they owned.
Answer:
growing levels of government spending
I would say that good judgement comes from considering the outcomes of your decisions.
This is not something that is a "talent": something that one is born with, or something that can be done without thinking too hard. Instead, one actually has to consider the outcomes of the decisions to be able to evaluate them.