Final answer:
During the period of sectionalism, the West aligned with the North and generally favored higher tariffs to protect domestic manufacturers, which is option D. Tariffs.
Step-by-step explanation:
The period of sectionalism in American history was marked by regional conflicts, especially between the North and the South. During the time of sectionalism, the West, approximately aligned with the North in many disputes, tended to favor policies that supported economic development and the growth of infrastructure. The North and West's preference was generally for higher tariffs, which protected domestic manufacturers from foreign competition by making imported goods more expensive. However, this economic stance was not without controversy, as Southerners, who relied on importing manufactured goods, viewed tariffs as an economic burden. So, in response to the question about what the West favored during sectionalism, the answer would be D. Tariffs. These tariffs helped support the growth of industry in the northern states and the development of the western frontier, while Southern states, which were more agriculturally focused and reliant on the plantation economy and slavery, viewed these policies unfavorably.