U CAN NOT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
It is not possible to change the in-game region on Pokemon Emerald. Each Pokemon game is coded to be set in only one region. This means only data for the Hoenn region exists in Pokemon Emerald. Pokemon Gold, Silver, Crystal, HeartGold and SoulSilver are the exceptions as they are set in Johto and Kanto.
The Fiore region is a region seen in Pokemon Ranger.
You can't get into the hoenn region in Pokemon diamond. It's a 1 region game and that region is SINNOH! BY THE WAY HAVE YOU HEARD OF POKEMON X AND Y
Pokemon Sun and Pokemon Moon are the newest games that will be for the Nintendo 3DS and Nintendo 2DS systems, you will be starting as a new trainer who had just moved into the Alola region which consists of at least four islands and you will also need to select one of three Starter Pokemon and you will also be in charge of catching Pokemon that can be found in the Alola region and you can also beat the Gym Leaders, the Elite 4 trainers and the Champion.
you cant
you can't
no,there is no other reigon in pokemon black and white.
Mostly likely, Pokemon is too profitable to stop making games at this point.
Maybe
Sorry its in another region
U CAN NOT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
You can't. Unova is the only region for Black and White.
YOU HAVE THE HACKROOMS
No. You can migrate Kanto Pokemon to your Platinum or catch some in the wild, but you cannot access one region from a game set in another region.
This is completely false, Nintendo did NOT program another region in Pokemon Diamond, besides Sinnoh.
Apart from the Battle Frontier, no.