Answer:
North had a more widespread network of railroads available for delivering troops and supplies to the battlefield.
Explanation:
The United States Civil War happened when the South ceded from the Union after the election of Abraham Lincoln, because they believed that they were no longer represented in the Union because Lincoln was an anti-slavery President. The South formed the Confederacy states and had advantages such as outstanding military officers, strong motivation and knowledge of ground, but since the Northern states were more industrialized they were able to produce their own supplies for the war, and counted with a network of railroads that were able to deliver those war supplies to the battlefield.
