WeLp urgent pls is for Civics

How were the economies of the northern and southern states different? how ere they the same? what factors led them to develop differently?

Whether or not a given study has the possibility of causing harm to participants:

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.