How did the railroad impact the relationship between astern cities and the great plains

they protect them in many ways.

most build a museums

give the museums money to support and finace and advertise there relgion.

cultivate talents such as cultural relics management and cultural relic protection and restoration.

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.