Answer: D
Step-by-step explanation:
The Union and confederacy were fighting for too completely different reasons.
The Union first fighting for the preservation of the Union, eventually becoming a war to free slaves (main reason behind this is to make it a righteous war so European powers would not intervene)
The Confederates on the other hand were fighting to preserve slavery (since their bustling cotton industry)
The Confederacy hated the Union and the Union the same (yes not everyone hated eachother), however, in any battle. You will not mourn the winning sides loses, you will not declare the enemy force deserving of the victory, and the war wasn't over, this was just a decisive victory at the time.