The federal government is composed of three distinct branches: legislative, executive, and judicial, whose powers are vested by the U.S. Constitution in the Congress, the President, and the federal courts, respectively. Is it what you need? I doubt I can help with the other question of yours. You may check it also at Prime Writings site. They have the extended database with the articles about your topic. Hope, I helped.
Two things that the Radical Republicans insisted be part of their Reconstruction plan was that the military would stay in the South to supervise the transition, and that the newly freed slaves would be offered all the freedoms of whites in the South.
The answer is True Hope this helps! :D