Were the chief supporters of sectional interests?

Yes, the chief supporters of sectional interests were often political leaders, business owners, and local elites who prioritized the economic and cultural needs of their specific regions over national unity. In the United States, this was particularly evident in the pre-Civil War era, where the North, South, and West had distinct interests related to industry, agriculture, and land use. These sectional interests often led to deep divisions, contributing to conflicts over issues like slavery, tariffs, and states' rights. As a result, the prioritization of regional concerns frequently took precedence over national cohesion.