That's why the revisionists keep trying to convince people that the war was about "slavery" or "Preserving the Union". They dare not admit it was about political and economic power to control Global trade, same as it is today.
Naw, that's just DiogenesLamp's little inner Democrat squeaking out from his hidey-hole -- having first falsely claimed that Deep South secession was not really "about slavery", but instead about important economic matters like "bounties" to fishing smacks, next he must convince us that Northerners too were acting not on noble principles like "preserving the Union" or "freeing the slaves", but only for equally base -- no strike that, not "equally base" but vastly more-base economic & political reasons.
It's pathetic really, but what can we do?