B is the answer just think about borders and such things as border patrol
Throughout a variety of civilizations, temples have played an incredibly important role in community life, since many people believed that the gods were responsible for every-day things like the weather--making these temple tributes essential in order to win their favor. <span />
Answer:
States gained a large piece of western land know as the Mexican session cession.
Because most farmers relied on slaves and when slavery was abolished so where there farms/plantations.