How did the railroads affect the relationship between eastern cities and the great plain

railroads brought crops and food to cities in the east and settlers to farms in the great plains

Facilitated the movement of food and goods from the eastern cities and the movement of the setters to the west.

Explanation:

As the movement between the two sides became inevitable, it became a necessity that the two sides be linked in as efficient manner as possible. Thus, there was a great need for a link between the two sides. This, then meant that there was a necessity to facilitate the movement of the people and goods across the continental divide. Thus, after the building of the railroad system, there was a great need to transport goods and personnel between the two sides. In essence, the railroads facilitated the movement of food and goods from the eastern cities and the movement of the setters to the west