The Yankees made their last pension payment for the war of Northern Aggression in May, 2020. Irene Triplet, $73.13 a month.
Reconstruction was a great disappointment because of the lack of the "vision thing." People just failed to understand what needed to be done to enable the former slaves to become economically independent. There was some land available for homesteading in the South but not nearly enough. If the government had bought the large plantations from their owners and helped the former slaves become successful small farmers, that would have been better than sharecropping or tenant farming, but there wasn't any tradition of spending large sums of money in that way (other than for war).