The major example of Abraham Lincoln's policy of leniency toward the defeated South is:
President Lincoln's decision that the southern state governments could reorganize after 10 percent of the voters took a loyalty oath to the Union.
This policy was part of his Ten Percent Plan, which aimed to facilitate the reintegration of the Southern states into the Union after the Civil War by allowing them to reestablish their governments once a small percentage of their voters pledged allegiance to the Union.