The radical republicans wanted to severely punish the South for causing the Civil War. They demanded harsher restrictions for the Former confederates who wanted to rejoin Congress.
From the Civil War through the time of Reconstruction, a section of the Republican Party called the Radical Republicans comprised of a number of politicians.
The Radicals were renowned for their resistance to enslavement, their work to achieve Black people's freedom and civil rights, and their passionate views on post-war Reconstruction.
Southern states were obliged to present state constitutions that approved the Thirteenth, Fourteenth, and Fifteenth Amendments as part of their applications for readmission to the Union. Grant continued to maintain army throughout the former Confederacy.
Therefore, the correct answer is Radical republicans and Former confederates.
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