This was a reconstruction proposal introduced by President Abraham Lincoln during the American Civil War. It stipulated that a Confederate state could be readmitted into the Union once ten percent of its voters (from the 1860 election) swore an oath of allegiance to the U.S. and pledged to abide by emancipation. Once that threshold was met, the state could then establish a new state government.
The significance of this initiative lay in its leniency towards the defeated Confederacy, reflecting Lincoln’s desire for a swift and relatively painless reunification. It aimed to shorten the war and foster reconciliation. The plan was met with considerable opposition, particularly from Radical Republicans in Congress who favored a more punitive approach towards the South and greater protection for newly freed slaves.