In my current campaign, my Kraxis empire is located in an isolated position in the south-east corner of the map. I share a border with only one other civilization (have a full 10 include ona huge map) and I also share a border with two wildlands.
The civilization I share a border with (I can't remember it's name -I'm a new player) just surrendered, despite being ranked 4th of 10 in power ratings. It had been at war with many others, though not with me. When it surrendered it completely disappeared, opening up several fertile land tiles (it had had 6 or 7 cities when it surrendered). I quickly built around 6 or 7 pioneers and colonized those former city sites without hardly any competition from the other civs which had bordered the surrendering civ. This completely shifted the balance of power in my favor.
This doesn't feel right to me. I wasn't at war with the surrendering civ, and yet I now have all of their lands without even any unrest. Even though I have to build the new cities from scratch, this is made much easier by all of my town's "+ food for whole faction buildings. and, of course, no occupation penalty.
But mainly because they surrendered to the civs they were at war with, not me. Those were the civs who were fighting for this land.
So do you turn off the opponent surrender threshold? If not, why do you leave it on? What are the benefits of keeping it enabled? Thanks in advance