The Union's Task
Military surrenders invite a simple explanation: The heavier battalions swept the battlefield. Supposedly, the combatant that can bring more men, more material, more sophisticated weapons to military points of contacts will defeat the less well endowed foe.
Assuredly, the free labor North wielded weightier resources than the slave labor South. The North's immense Civil War task, however, bade fair to outweigh the section's larger power. If the Confederacy could have marshaled all the slave labor states' people and resources, free labor states might have been insufficiently richer, especially in manpower, to afford the Union's costly strategy to complete its difficult conquest.
In 1860, the free labor states' population outnumbered the slave labor states' by 19 to 12 million, a more than three to two margin. Free labor