How plausible was the Reconstruction agenda of the Radical Republicans

Discuss how plausible was the Reconstruction agenda of the Radical Republicans?
In answering this question, first describe that agenda. What did the Radical Republicans want?
Second, identify the opponents of the agenda, and the barriers they put in the way.
Third, explain how and on what issues the barriers were or were not overcome.
Fourth and finally, account for the end of Reconstruction and indicate how it might (or might not) have been
different.