The Union was confirmed by the most industrialized states in the country. This meant that the production of weapons and tools related to war logistics was controlled by them. Besides having more weapons and supplies, the Union also had more soldiers, as the population was considerably bigger in the north.
Railroads are a sign of development. In terms of war, they helped mobilize troops and resources along the country with relative ease in comparison to their Confederate counterparts. This represented a great advantage for the Union.
Besides having the previously mentioned advantages. The Union also had the naval power on their side and executed the blockade in an attempt to cut the resources from The Confederacy. As a response, the southern states replaced the growth of Cotton with other crops in order to have food supplies.
1. More soldiers and more workers
2. Other than shipping, railroads were the fastest way to travel in the time period. With fewer miles of railroad, Southern troops would have fewer options for fast travel to where they would be needed.
3. Quality of troops or leadership, amount of money available, guns and gunpowder already available
