Did either side in the civil war have the bigger advantage at the start of the war?

At the start of the Civil War, the Union held significant advantages, including a larger population, greater industrial capacity, and a more extensive railway network for troop and supply movement. In contrast, the Confederacy had the advantage of fighting on familiar territory and strong military leadership. While the Union's resources were substantial, the Confederacy's strategic advantages, including motivation and military prowess, contributed to a complex and dynamic conflict. Overall, the Union's material advantages were more pronounced at the outset of the war.