Simple question: If slavery was a dying institution, why did the south so agitate for it's expansion?
Simple question: If the states were sovereign, why did the Union invade?
The North's gradual emancipation was just moving freedman elsewhere. They didn't want Blacks in their cities and were just as happy to relocate them overseas or to the western territories. The north abandoned the system of chattel slavery for industrial sweatshops. They sold their slaves South to the agrarian class when it was convenient and only after they made profit on the slave trade.