Final answer:
The Union and Confederate leaders met at the McLean House in Appomattox Courthouse, Virginia, where Confederate General Robert E. Lee surrendered to Union General Ulysses S. Grant on April 9, 1865.
Step-by-step explanation:
The Union and Confederate leaders met at the McLean House in Appomattox Courthouse, Virginia, to discuss the terms of surrender. This historic event took place on April 9, 1865, after a series of correspondences between Confederate General Robert E. Lee and Union General Ulysses S. Grant. Grant had approached Lee with the suggestion that further resistance would be futile, leading to the subsequent surrender of Lee's Army of Northern Virginia. In Lee's farewell address to his army, he emphasized that their defeat was due to the 'overwhelming numbers and resources' of the Union forces rather than internal shortcomings of the Confederate army.