Unova

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The  Unova region (Japanese:  イッシュ地方  Isshu-chihō) is a  region of the  Pokémon world. It is the setting of  Pokémon Black and White and  Pokémon Black 2 and White 2. It is far away from the four other large regions, and the Pokémon which inhabit Unova are diverse and different from those of  Kanto,  Johto, Hoenn, and  Sinnoh. In his director's column,  Junichi Masuda suggested that the geographical and social background for Unova draws inspiration from the  New York City metropolitan area[1]   [2] <span style="color:rgb(0,0,0);font-family:sans-serif;line-height:19px;">, although the region features rural locations as well as industrial.

<span style="color:rgb(0,0,0);font-family:sans-serif;line-height:19px;">Taken from Bulbapedia