I got two observations as of US (v1.03) after playing for ten-year.
First of all, the over-supply or the lack of demand is horrendous. Except some luxuries and exotic products, such as gold and silk, everything is over-produced and almost nobody is buying. Is this expected?
Secondly the contentment of the population is dropping like a rock after 1855. The contentment increased gradually for the first a few years and gain steadily by 0.4% to 0.5% by selling products to the national market. It reached as high as 63 at some point, but now it is 1859 and the contentment is at 43. Does this drop have anything to do with tension caused by the slavery? And I have to wait for the civil war to turn it around?