Why is this event at Appomattox Court House, pictured in this illustration, significant to the Civil War? A. Appomattox Court House is where Robert E. Lee surrendered to Ulysses S. Grant ending the Civil War. B. Robert E. Lee and Ulysses S. Grant met at Appomattox Court House to moum the death of Stonewall Jackson. C. Robert E. Lee and Ulysses S. Grant met at Appomattox Court House to negotiate an end to Sheridan's raids in the Shenandoah Valley. D. Jefferson Davis sent Robert E. Lee to Appomattox Court House to inform Ulysses S. Grant that the Confederate States of America had ratified its constitution.