You have to battle every single trainer if not true improve answer
Just catch the most Pokemon you can ;)
you have to fill up your pokedex
You have see to many different pokemons. Then you will fill it (you have to every Pokemon to get national pokedex).
Okay, to get the Pokemon to fill the National Pokedex, either you: migrate Pokemon from Emerald, Ruby, Sapphire, Firered, and Leafgreen. Or you could go in the wild near thesurvival area, which won't help a lot but it can help. Hope this helps!!
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.
Yes you can. You just have to fill up your pokedex and talk to pr.Rowan.
you just have to play the game
Your supposed to fill the complete pokedex. hoenn and national
If you want to fill your pokedex, you must trade between Ruby and Emerald to gain the Pokemon that are not in Sapphire.
It is a Chatot in the Sinnoh Pokedex and an Exeggcute in the National Pokedex. If you have an Action Replay, you can get the cheat code that has 100% complete Pokedex and it will fill your whole Pokedex. Hope I helped!!!
you have to see all of the Pokemon and then you get the national pokedex from Prof. Rowen and Prof. Oak in Prof. rowen's lab after completeing the Sinnoh pokedex.
no they don't add Pokemon into your pokedex there