What is the challenge for the United States at the end of the Civil War?

I think I'm not sure but they had little amount of resources left because they used it all on the war .

in which two ways were the northeast woodland indians and the southeast indians similar? both collaborated to form the iroquois confederacy. both cultivated the crops of corn, beans, and squash. both lived in rich environments of swamps and rivers. both lived in tree-bark dwellings called wigwams. both expected men to hunt, while women farmed.