How could a nation that declared "all men aren't created equal" justify slavery?

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.

Match each mode of narration to the excerpt in which it is used

Describe the impact of the neolithic revolution on civilization