Sectionalism is a partiality for, or a restriction of interest, to one place, like when a politician shows little interest in other countries or a friend thinks her living room couch is more fun than anywhere else.
Having a devotion to just one section of a larger place, the somewhat narrow-minded sectionalism just can’t see the forest for the trees. Sectionalism is a practically provincial devotion to one particular place, and is usually a little bit irrational in its partiality. Of course, if you live in Hawaii or Paris, a little bit of sectionalism might be understandable.
