Christy S. answered 11/28/23
Experienced High School Teacher for Reading and Social Studies
Let's first define what is meant by the "Union" and the "Confederacy". The Union comprised the following states under the leadership of President Abraham Lincoln: Maine, New York, New Hampshire, Vermont, Massachusetts, Connecticut, Rhode Island, Pennsylvania, New Jersey, Ohio, Indiana, Illinois, Kansas, Michigan, Wisconsin, Iowa, California, Nevada, and Oregon. The Confederacy consisted of the states of Texas, Arkansas, Louisiana, Tennessee, Mississippi, Alabama, Georgia, Florida, South Carolina, North Carolina, and Virginia under President Jefferson Davis.
As you can see, the Union had the advantage of population 18.5 million in comparison to the Confederacy's 5.5 million fee and 3.5 million enslaved. The battles of the Civil War were bloody with high casualties on both sides, so having a larger population to support going to war, was one advantage of the Union.
Another advantage, was in the industrial capacity for manufacturing for the war. The Union had 101,000 factories, while the Confederacy had 21,000. Even with transportation, the Union had 20,000 miles of railroad compared to 9,000 in the Confederacy. Being able to transport goods to the warfront was a key aspect to the Union winning the war.