Which of the following comparisons between mexico's coastal areas and its heartland is accurate?
a.
the heartland gets very little rainfall, while the coastal areas get a great deal of rain.
c.
the coastal areas are devoted to tourism, while the heartland is focused on agriculture.
b.
the heartland is sparsely populated, while the coast is heavily populated.
d.
the coastal areas are hot and dry, while the heartland is cold and wet.

Actually, the correct answer is C, I just took the test.

the first phase of the government’s plan for settlement was building the transcontinental railroad. the railroad provided a way to bring settlers and manufactured goods west and ship their agricultural and mining produce east. the transcontinental railroad was an essential artery for rapid development of the frontier.

the second phase of the government’s plan was a liberal land distribution policy that made it possible for many people to homestead. with these two key elements—transportation and cheap land—the government rapidly achieved its goal of persuading people to move west, settle on farms, and push back the frontier.