What did many Northern people believe about the South? that it should be allowed to become an independent country that it should close Southern ports to midwestern shippers that its economic focus should become industrial rather than agricultural that manifest destiny did not apply

Many Northern people believed that the South's economic focus should become industrial rather than agricultural. This belief was part of a broader perspective that industrialization and modernization were key to economic progress and national strength, contrasting with the South's reliance on an agrarian economy based heavily on slavery.