you cant
give one to a Pokemon and trade the Pokemon with the master ball.
you can't
in every pokemon game you get one master ball before the leauge
You cannot get that many master balls without an Action Replay. You are only allowed one per game.
You cant you only get one ( without action replay )
$#@! no
You can't.
You can't.
you cant
The GTS cloning glitch.
To get more than one Master Ball, you must trade Pokemon that are holding them to your game.
Give your Master Ball to a Pokemon to hold, then clone it in Emerald with the cloning glitch.