Final answer:
Reconstruction was the post-Civil War era where strategies were devised for the Southern states' re-entry into the Union and for defining freedmen's rights. The moderate 'ten percent plan' by President Lincoln conflicted with Radical Republicans' stricter proposals, creating a political struggle that intensified after Lincoln's death and the succession of Andrew Johnson.
Step-by-step explanation:
Understanding Reconstruction
Reconstruction, spanning from 1865 to 1877, was an era in which the United States endeavored to reintegrate the Southern states into the Union and to establish the rights of freedmen within that union. This period began before the conclusion of the Civil War, with President Abraham Lincoln initiating the process of reunification. Lincoln’s ten percent plan proposed that once ten percent of a state's voting population took an oath of allegiance, that state could form a new government and be readmitted to the Union. Radical Republicans, however, found Lincoln's terms too lenient and sought to enforce more stringent conditions to protect African Americans and restructure Southern society. After Lincoln's assassination, President Andrew Johnson attempted to follow Lincoln’s approach, but clashed with the Congress’s more radical approaches. This set the stage for a significant power struggle over the direction of Reconstruction.