Why do you think studying an history is so important? What can it tell us about past cultures?

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.  

an economic reason that the south needed a reconstruction plan is that plantations, factories, and other businesses were destroyed during the war.