[quote=@Product]
<Snipped quote by Vertigo>

I never went into detail on how the war was ended. I mentioned that Hyrule gained the upperhand before both sides agreed to peace. Rolo securing the valley was the upperhand.
[/quote]

Wait, okay, so let me just make this clear, but--- The Gerudo Valley, in this case, doesn't equal the place where all the Gerudo live, where all their houses and fortresses are and so on... right? But just the valley that leads from the Gerudo territory to Hylia? So taking over that would essentially cut off their free access to the lands beyond.

Because when I saw Gerudo Valley, I thought of Ocarina of Time (I haven't finished BoTW yet, sadly) and assumed you meant the main place where the Gerudo live and went "wait what".