Why did many northerners support tariffs?

Many Northerners supported tariffs because they protected emerging American industries from foreign competition, particularly from Europe. By imposing taxes on imported goods, tariffs encouraged consumers to buy domestically produced products, which helped boost the northern economy and create jobs. Additionally, the revenue generated from tariffs was often used to fund infrastructure improvements in the industrialized North. This economic protectionism aligned with the interests of northern manufacturers and workers, fostering a sense of regional solidarity.