What did northern farmers favor protective tariffs?

Northern farmers favored protective tariffs because they believed these tariffs would shield American industries from foreign competition, thus promoting domestic manufacturing. By raising the cost of imported goods, tariffs made locally-produced products more attractive to consumers. This support was particularly strong among farmers in industrialized areas who benefitted from growing markets for their goods. Ultimately, they viewed protective tariffs as a way to strengthen the economy and enhance their own agricultural interests.