First you have to obtain the badge from your father.Then go to Maulville city and talk to the gym leader who'll be standing outside. Last talk to him and hell give you the key
Ruby & Sapphire Key
i don't think so since sapphire is a game-boy version and diamond is nintedo ds version but since sapphire is a game-boy version you can migrate Pokemon from there.
there is no such thing in Sapphire
Sadly, you can't catch Groundon is the Sapphire Version, however you can in the Ruby version, you will find him in the same place you find Kyorge in the sapphire version.
in that city, use surf into the water than in the cave at the center, u will need it.
Spiritomb is not available on Pokemon Sapphire Version.
you need to have the sapphire version in the gameboy slot and the diamond version in the other slot
No.
NO!
Pocket Monsters Sapphire Version [Japanese Version of the game] was released on November 21st, 2002. Pokemon Sapphire Version [American Version Release]: March 17th, 2003 Pokemon Sapphire Version [Australia]: April 3rd, 2003 Pokemon Sapphire Version [Europe]: July 25th, 2003 So currently, it is about 8 [9 in November] years old in Japan [2011] and 8 years old in America, etc. ~Pokemon fan
how do we get the TM avallanche in pokeemon sapphire version
only when you get the national dex on Sapphire version