regionalism

/R IY1 JH AH0 N AH0 L IH0 Z AH0 M/
noun
  1. 1

    Affection, often excessive, for one's own region and to everything related to it.

  2. 2

    Political tendency to concede forms of politico-administrative autonomy to regions.

  3. 3

    A word or phrase originating in, characteristic of, or limited to a region.

Source: https://en.wiktionary.org/wiki/regionalism