What kind of countries existed in ancient greece

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.

Which letter correctly labels the mississippi river? a b c labeled map of the mississippi river and surrounding regions.

What is the difference between an independent and a dependent variable?