The correct answer is D) 97%.
During the Civil War, the percentage of firearm production that was controlled by the Union was 97%.
According to the graphic that compares the resources between the Union Army and the Confederate Army during the Civil War, we can see how the industry of the Union states favored the circumstances of the Northern states over the Southern states that heavily depended on agriculture and slavery. The Union had fabrics and railroads that helped them transport war supplies to different parts of the territory. They also had more money in the bank to finance the war effort.
