regionalism

noun

1. (countable, uncountable)Affection, often excessive, for one's own region and to everything related to it.

   “Whereas organizations such as the WIFA and CU confirmed regional West Indian identifications and represented the connections between transnational West Indian organizations and black diaspora politics, the JPL, as a transnational Jamaican organization, demonstrates that the regionalism that took root among many West Indian expatriates in these years did not negate all expatriates' islandist perspectives and allegiances.”

2. (countable, uncountable)The belief that most or nearly all political power should be decentralized to regional governments.
3. (countable)A word or phrase originating in, characteristic of, or limited to a region.

   “... the formal normative variety of the language as it is used today in formal writing by educated native speakers. As a result, we have eschewed dialectisms and regionalisms. The English variety employed in the book is formal British English, ...”

4. (countable, uncountable)Regional character, local color.

   “Director Deitch has filled the sountrack with country music classics […] and this adds to the regionalism of the film as well as to the feeling which buoys the movie up from simplistic formula to romantic reverie.”