What was one provision for Southern States to be readmitted to the Union and represented in Congress after the Civil War?

During the American Civil War in December 1863, Abraham Lincoln offered a model for reinstatement of Southern states called the “10 Percent Plan.” It decreed that a state could be reintegrated into the Union when 10 percent of the 1860 vote count from that state had taken an oath of allegiance to the United States

Explanation:

the american gained the respect of other foreign nations