This is an extremely complex issue, but most historians agree tat Reconstruction was an overall failure, since although the African Americans were technically free from slavery, many states in the South implemented a series of "Jim Crow" laws that kept the newly-freed slaves from being equal members of society. <span />
Because of fashioned virtues.
They won the war which enabled them to become a republican democracy instead of a monarchy. They freed themselves from central authority and wanted to have a democratic federal government to rule made out of people and not just nobles who claimed that they had right to rule.