You bring them to Celio on one island. I know that you are able to trade with Pokemon emerald, ruby and sapphire after of you have beaten the Pokemon league and collected at least 60 Pokemon. You have to talk to proffessor oak to get the national dex
you have to trade all of the hoenn-exclusive Pokemon from a Pokemon ruby/sapphire/emerald cartridge
You finish the game by beating the Elite Four. If you beat that try to get all the Pokemon from firered, leafgreen, emerald, sapphire, ruby, and pearl.
Yes, however, you must finish the entire game, and also get the ruby and sapphire on the sevii islands. Then you can trade with people with R/S/E.
Trade, Train, Evolve, Catch, Breed all the pokemon!
You cannot 'finish' Pokemon LeafGreen and FireRed. You might be thinking about defeating the Elite Four. That is the end point of most trainers, but you can go ahead and capture legendary Pokemon like Mewtwo, Lugia and so-on.
No but it is essential to trading with other games.
trade Pokemon or use cheat machines
To get Suicune you need to had chosen Charmender for your Starter Pokemon .Then finish the Elite Four .And
You can only get inside when you fight finish the Pokemon league .
...? umm this question doesnt make sense. you do it by seeing Pokemon! all the Pokemon in the game! (no trade)
You must defeat the elite four and the Pokemon champion then catch all the Pokemon which is only possible with help from friends.
start with bulbasaur an finish the game (includeing n dex) and done