What do we take forward and how do we as a country finally put the civil war behind us and unite as one people, or is that too high of an ideal to become reality ?

we had never put the civil war behind us. A lot of people still believe "white" people are superior than other races. We would like to believe that we are all equal but in reality it's too high of an ideal

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.

b is the answer i am assuming