Nothing, but if you go to lilycove city, talk to a man upstairs in the hotel, he will show/give you a certificate saying you have completed the pokedex
If you want to fill your pokedex, you must trade between Ruby and Emerald to gain the Pokemon that are not in Sapphire.
It's possible.
Actually nothing happens
Go to a Pokémon Market and fill in the questionnaire with:LINK TOGETHER WITH ALL
you can't catch more pokemon. you have to get rid of some pokemon.
Fill the Paints of Second floor.To this complete all Master Ranks of Contests.
Only emerald can get a johto starter however you can trade the johto shadow Pokemon from Pokemon colosseum then breed them in sapphire to get the johto starters you can also trade the johto starters directly from Pokemon xd gale of darkness.
There are many different ways to fill the national Pokedex. You can play FireRed, Leaf Green, Sapphire, Ruby and Emerald and transfer the Pokemon via Pal Park. Use the global link to trade for the missing Pokemon or trade with friends.
you would have to set loose some Pokemon in order to make room for other Pokemon.
yes you can they are both the same game.emerald can trade with Sapphire ruby emerald firered leafgreen and that's its. the trick that u can do is migrate your Pokemon from firered leafgreen Sapphire ruby and emerald to fill up your national pokedex in Pokemon diamond, pearl, platinum,heartgold, and soulsilver. U MUST have a ds or ds lite
You go to a pokemart like lillycove at the side of the desk there is a questionaiir and then fill it in with LINK TOGETHER WITH ALL ! I HOPE THIS HELPS YOU
just keep pal-parking(GET IT,GOT IT,GOOD