I think Argentina spawns one turn before Columbia, so most people use it to play Columbia.
Is there a way to make it playable from the start? The big reason I haven't played that civ as well as a few others (I really wanna give Mexico a try) is because when I switch over, it reverts all of my game settings and the game becomes unplayable for me. Unless there's a trick I am missing?
What can be considered as stable areas? Areas that are held by at least 10-20 in-game turns IRL?
I've always thought of foreign land in the mod as land your nation never controlled or owned. Not as something that exists when two nations controlled said land.
That's true, but game balance takes priority here and historicity isn't the question at hand here.
I personally do not want to see a Stable+ AI America that controls the 50 states, the Philippines, Cuba, Iraq and etc.
Even with the historicity angle, American control of the Philippines can hardly be considered lengthy or stable.
You can see this principle applied with other examples like Persia and how Anatolia (Ionia) isn't Historical for them, despite their control over it.
Oh I never would've suggested that Iraq be historical for America. Plus while you do have to balance stuff this mod should be about as much realism as possible.
Iraq actually is Historical for America currently. (Contested actually, as it's in Arabia and Babylon's core)
What do you mean by choosing the victory requirements?
Playing and then fulfilling the objectives should earn you the victory per normal.
There is no fixing of your intended victory from the outset.
If you manually edit the WB saves before starting the game, that should work.