No. You stay in the Sinnoh Region the whole time.
No.
NO
No, but you can find Pokemon's from other regions
go on Pokemon Platinum Walkthrough you'll might get the idea.
go on Google:Web type in Pokemon platinum. when you are on it, put your DS on, ask a parent to do this.
No.
You never will go to a different region.
NO
No, but you can find Pokemon's from other regions
You can't, Platinum is in the Sinoh region and the Sinow region only.
I dont think there is one.
Sadly you still cannot go back to the original regions. However, you are able to visit the Distortion world now.
no
You cannot go to different regions in Pokémon White.
No.
you can go to all the regions. First tou have to beat the battle frontier and find this old man with a ghost Pokemon and then you go home and you will find may.and you will get to battle any were.
I am not certain it is possible to go to other regions in Platinum, but I don't think they are accessible simply because you could do that it in the Emerald version. The only way (in my opinion) to get to the other regions are by using Action Replay cheats.