What led to the rise of cities in Central and South America? A.
an increase in the surplus of food and a rise in population.
B.
a source of cheap building material.
C.
people needed a place to rest after hunting for animals all day.
D.
farmers planted seeds and cities started to grow.

Why did the medicine lodge creek treaty fail to bring peace to west texas? a. native americans protested the sale of weapons on reservations. b. supporters of the treaty face discrimination in their own communities. c. the united states government and native americans both refused to fully carry it out. d. the united states government prevented its military from entering reservations.