The entirety of Pokemon Pearl and Diamond is set in the Sinnoh region. There is no way to revisit any of the other Pokemon world regions.
Its the sequel of diamond and pearl. Its the same region but it has addition things like walking on walls and distortion-like things.
beat the pokemon league then go to snowpoint city. go to the gym and then travel straight down and somewhere aroung there will be a ship. then u can travel to and island that has the hoen kanto and johto region pokemon.
No, Kanto is not available in Pokemon Diamond, Pearl, or Platinum. The only games that allow players to arrive in Kanto from a different region are Pokemon Silver, Gold, Crystal, SoulSilver, and HeartGold.
there's only one region in Pokemon pearl
The Johto Gym Leader Jasmine from Olivine City is in Sunyshore City.
go on serebii.net (just type in Pokemon pearl pokedex) click on the one that says johoto
You can't.
sadly no
Yes, Pokemon Diamond and Pearl's region name is Sinnoh Region.
You can't go to Johto in Pokemon FireRed or LeafGreen.
there is no region after sinnoh in Pokemon diamond and Pokemon pearl.
johoto or kanto regions
Blackthorn City in Johoto
In Pokemon Diamond, Pearl, and Platinum the region is called Sinnoh.
they are all the same
No. You CAN import Pokemon from there, though.