How did neolithic farmers adapt to mountains and hills?

a: they only used them to build homes.
b: they stayed away from sloped land.
c: they built terraces for growing crops.
d: they grew crops at the top of them.

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.

Mississippi, florida, alabama, georgia, louisiana, and texas all seceded from the union. true or false ?

What was one major cause of worldwide conflict during the first decade of the 21st century?