Which dynasty is the mandate of heaven to justify its replacement of the previous dynasty

The supreme court ruled that slaves could not sue because they could not read. they could not become lawyers. they lived in southern states. they were not considered citizens.

The sahel is located on the edge of the sahara desert. a. north b. west c. south d. east

How did african americans the union during the civil war? a. by serving as representatives in congress b. by enlisting in the military to fight c. by organizing massive slave revolts in the south d. by negotiating for peace with the confederacy