Congress
gain voting right for the newly freed slaves
It was Democratic under the leadership of James Buchanan and Republican right before the start of the civil war under the leadership of Abraham Lincoln.
There were several events that led to the collapse of Reconstruction in the South. The first was the weakening and eventual end of the Freedman's' Bureau, which had acted as an advocate for the newly freed slaves on many levels. Next, was a weak president, Andrew Johnson, who appeased the former Confederate states by removing federal military districts. Another reason was the shift from the Radical Republican representation in Congress, to the Liberal/Republican party who were not as interested the plight of the newly freed slaves.
Republican
Thaddeus stevens
The main goal for the reconstruction in the Civil War was to rebuild and accept the South in the US again, but radical republican reconstruction wanted to make the South pay for what they had done. The radical republican reconstruction was somewhat of a success in that they had several bills passed in Congress against the South.
Lincoln's Reconstruction plan, Johnson's Reconstruction Plan and the Radical Republicans in Congress Reconstrucion plan
The most common definition of a Radical Republican during the US Civil War was a Republican who viewed the war as a crusade against slavery. They were a minority in the party. But they were a vocal minority.
Radical Reconstruction was the imposition of military government in the South after the Civil War, in order to punish the former Confederate states and enforce the abolishment of slavery. Abraham Lincoln disagreed with the plans of the Radical Republicans in Congress, who instituted the military control of the South after his assassination,
In 1866 President Johnson made the bold move to veto the extension of the Freedman Bureau. This caused the radical Republicans to, for the first time ever, over turn the Presidents veto.
The main leaders of the radical republicans.
The Radical Republicans
Congress
Salmon P. Chase was a remarkable Treasury Secretary to Lincoln, and he was very instrumental in financing the Civil War. Chase was also a Radical Republican, and while he was in Lincoln's Cabinet, the Radicals in Congress were satisfied that Lincoln had a Radical in his Cabinet and criticised him less than they would have otherwise.
gain voting right for the newly freed slaves
They were leaders of the Radical faction of the Republican Party at the time of the Civil War.