They are very common in New Mauville. You need a Pokemon that knows Surf to get there.
yes. migrate from a gba game. (magnemite is in all gba Pokemon games)
There is no legitimate way to evolve it without trading.
The only way to get Magneton is to evolve a Magnemite.
There is no way of getting all beginner Pokemon without trading.
It is one of the first 3 Pokemon you can choose, that is the only way to get it without trading
getting what
Get Pokemon emerald and then you can get all three without cheats or trading
Besides cheating, there is no way.
No
The only way to get an extra masterball without trading is to win the lottery jackpot. The game does not allow you to receive masterballs in any other ways.
It is impossible to obtain a Porygon2 without trading. You can get a Porygon and trade it with an Up-Grade or you can get a Porygon2 from the GTS but there is no way to get Porygon2 without trading.
You cannot evolve Machoke into Machamp without trading Machoke, it must be traded in order to evolve it, there is no other way to evolve it.