Knowing that the Civil War was a war between the Union States (North) vs. the Confederate States (South). The two main causes of war were Slavery and Religion. The Union President Abraham Lincoln resounding "no" to the central provision of the Crittenden Plan and similar proposals stiffened the backbone of congressional Republicans.(American Stories, pg.363) The Union having triple the money as the Confederacy States and having 18.5 million free people while the Confederacy had 5.5 million free people and 3.5 million slaves had nor the strength, nor food, nor Industrial production as the Union States.
Ultimately, the Civil War was