Final answer:
The North's advantage in the Civil War included superior industrial capabilities, an extensive railroad network for efficient troop and supply movement, a larger population for military recruitment, and abundant food resources.
Step-by-step explanation:
One significant advantage the North gained during the Civil War was its superior industrial capabilities and extensive railroad grid. This allowed the North to produce more war materials and move troops and supplies more efficiently than the South. Additionally, the North's larger population meant it had a larger pool of men to draw from for its armies. The farms in the North also supplied its civilians and troops with an abundance of food, avoiding the shortages that plagued the South.