What is the best example that describes the idea of sectionalism?

A prime example of sectionalism is the divide between the North and South in the United States prior to the Civil War. The North was increasingly industrialized and favored tariffs and free labor, while the agrarian South depended on slave labor for its cotton economy and opposed such tariffs. This economic and cultural divergence fueled tensions, culminating in political conflicts over slavery and states’ rights, ultimately leading to the secession of Southern states and the Civil War.