What was the demographic make up in the north and south in 1860?

To take a standard test such as the psat or plan students must have an

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society

Which is relatively better: a score of 76 on a psychology test or a score of 22 on an economics test? scores on the psychology test have a mean of 90 and a standard deviation of 13. scores on the economics test have a mean of 52 and a standard deviation of 10.