How did inhabitants of Early River Valley Civilizations innovate to meet their needs?

Who issued the ruling for the supreme court? dred scott roger b. taney abraham lincoln john c. calhoun

Which of the following inventions most directly allowed ancient farmers to produce a surplus ?

How did bacon's rebellion affect relations between colonists and native americans? a. relations improved after many were disgusted by the violence of the rebellion. b. after the rebellion, colonists placed less focus on the "indian problem."c. the rebellion showed many that in order to establish better relations between colonists and native americans,  slavery  had to be legalized. d. more colonists supported an armed expansion into native american territory.