You cannot go to any other regions in Pokémon Black.
NO
No, unfortunately.
As in regions you can't.
You cannot go to the Sinnoh region in Pokemon Black.
No. You cannot go to any of the previous regions in this game.
Yes,you have to go to the city where all the skyscrapers are and go onto the black boat.
Pokemon Black only takes place in the Unova Region.
You can ONLY go to the Unova region without cheats and hacks. Although after you beat the Elite Four, new routes are unlocked with Pokemon from all of the other regions, though this is still in Unova.
johoto or kanto regions
there are no other regions in Pokemon black or white.
more than likely not but if you are able to go to other regions could you tell me how cause I have it and I havent yet
Nope just unova