I knew that the Masuda Method requires 2 Pokemon from different countries, but do you need to fully evolve the Pokemon before breeding them? Or can it be done with the first stage only (Bulbasaur, Finneon, Geodude, etc.)
You don't need to fully evolve the Pokemon before doing the method since the only requirement you need is 2 breedable Pokemon from different countries. So if both Pokemon are from the same country then masuda method won't work.
What is the masuda method