The English phrase long time no see is actually not grammatically correct and is believed to be a translation of a Chinese phrase. The word girl was originally a synonym for a child of either gender, while boy meant something closer to servant..
(Answer #2). The major economic difference between the North and the South during this time was that the North was a mixed economy with free labor while the South was an agrarian economy based on slave labor. Because of these differences, the North industrialized and the South largely did not.
The widening difference in the economic base of the north (industry, which used machines, like to make cotton cloth) and the south, which was agriculture based and thus a huge proponent of slaves to plant, cultivate, and harvest crops lead to an economic and moral split; with the North mostly being against slavery (while paying their workers 10 cents a day for 12 hour days), and the South wanting to keep their slaves.