Which was not a key achievement of the Ming Dynasty? 1- the improvement of roads and canals

2- the voyages of Zheng He

3- the rebuilding of the Great Wall

4- the expansion of China's borders

How would europe benefit economically from greater unity

How did the invention of the cotton gin affect slave labor in the united states? a. there was a forced migration of slaves from the south to the north. b. slave-owning cotton planters were gradually forced to sell their plantations. c. more slaves were purchased to work on cotton plantations in the south. d. the reduced need for labor on cotton plantations led to a decline in slavery. e. slaves were moved from cotton plantations to sugar plantations.

(20+ points) (will mark brainliest) which of the following sections represent state-level courts?