Consoom farming equipment.
(media.scored.co)
It was about tariffs, the south wasnt happy the north was taxing their exports, which were their main source of income since they werent industrialized. Lincoln hoped to start a slave revolt, which is why he issued the emancipation proclamation, but since the south was technically a separate country at the time, it meant literally nothing unless the north took a territory, and it didnt apply to the slave states in the north.