What was the greatest economic motive behind nineteenth century colonization

The 14th amendment overruled the supreme court case of dred scott vs. sandford. the landmark supreme court case determined which of the following points? a.slaves could not be citizens b.non-landowners could not be citizens c.blacks could not be citizens d.all persons born or naturalized in the united states vary differently in citizen status.

When did the us congress declare war on the confederate states?

Which is not characteristic of capitalism? a) market e-commerce b) supply and demand c) freedom of competition d) a society without social classes