Why did spain colonize florida and the rio grande valley?

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.

Who was in charge of american troops during world war i?

What are some inventions during the han dynasty?