why it was so important to keep the border states in the Union?

Keeping the border states in the Union during the Civil War was crucial for several reasons. Firstly, these states—such as Maryland, Kentucky, and Missouri—were strategically located, providing vital transportation routes and resources. Secondly, they had significant populations and military potential, which could bolster the Union’s forces. Lastly, retaining these states helped to prevent the further expansion of the Confederacy and maintained a united front against secession.