The Kanto Region. It's the first region that Ash and his friends start out in in the TV series.
in firered and leafgreen you play in the kanto region
kanto
You can't get to the johto region in firered.
you cannot
Whirl islands are in the johto region which is not in firered.
you cant, sorry.
It's Kanto. ;)
You're in the Kanto region in LeafGreen and FireRed.
corphish is a Pokemon that is native to the hoenn region
You can only trade it from the Johto region or the Hoen Region.
Taillow is a 3rd Generation Pokemon or a Hoenn region exclusive Pokemon meaning that Firered version which takes place in the Kanto region cannot capture it. All 3rd Generation Pokemon must be traded to Firered from either Ruby, Sapphire or Emerald.
You can NEVER go to the Hoenn region in LeafGreen or FireRed. You may trade with Ruby/Sapphire/Emerald, but NO!!!