Final answer:
The South surrendered to the North when General Robert E. Lee surrendered his Army of Northern Virginia to General Ulysses S. Grant on April 9, 1865, at Appomattox Court House in Virginia.
Step-by-step explanation:
The official surrender of the Confederacy to the Union occurred when General Robert E. Lee surrendered to General Ulysses S. Grant at the McLean House in Appomattox Courthouse, Virginia on April 9, 1865. This significant event marked the beginning of the end of the Civil War, although other Confederate forces continued to fight for a short period of time. The surrender at Appomattox was a crucial moment in American history as it brought the brutal and lengthy Civil War to a close, resulting in the restoration of the Union and the end of the Confederate States of America.