How were napoleon's forces weakened and then defeated

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.

Space is not completely empty. there are small particles in space. what happens when these particles come together?

The date a source was created is considered part of its historical context intended audience purpose point of view