You can't. It's impossible.
No.
You never will go to a different region.
No. You stay in the Sinnoh Region the whole time.
NO
six
There is no Action Replay code to travel to different regions or change Sinnoh to any other region.
Hoenn in Pokemon Platinum does not exist. I believe games in the future should have 2 or 3 regions in it. Pokemon Platinum only has the Sinnoh Region.
there r 2 regions. sinnoh and the battle frontier
Sadly no.
No, but you can find Pokemon's from other regions
Platinum only has 1 region. And that is Sinnoh
I'm pretty sure you can't.