How does the poster use location to encourage settlers to move west?

A.
It contrasts rural spaces with crowded city life.

B.
It explains the land's proximity to the railway.

C.
It downplays the land's use as a Native American reservation.

D.
It ignores the natural resources of the western states.

B. It explains the land's proximity to the railway.

The correct answer is B. The poster encourages settlers to move west by explaining the land's proximity to the railway.