I heard on this forum somewhere that it was related to how much prestige the enemy country had, and this has seemed correct so far. I've been going round annexing all the uncivilised nations with negative prestige, and each time it has only cost me 1 prestige point to declare (colonial) war on them.
However, what I have found is as soon as the enemy country has over 0 prestige, you're paying 100 prestige points for a declaration of war. If the enemy has only a few negative prestige points (let's say -10) you'd still pay quite a few points for a declaration of war, though not the full 100.
This all seemed to work fine. However I've now declared a colonial war on France. France has 764 prestige, so I was expecting to pay 100 prestige points to declare war on them. However, I only have to pay 36pts.
So this has rendered what I thought was the calculation irrelevant, so it must be something else. France has much more industry than me (I'm playing as Transvaal), I have a slightly larger military score than them, and I have 400 more prestige than they do. Against the uncivilised nations I always had the advantage in military score, prestige, and industry. If it helps, France is a Great Power, and I am an independant nation (at rank 9).
So this makes me wonder why I am paying less prestige points to declare war on a much better country, when before I've had to pay 100 prestige points just to attack Oranjie!
However, what I have found is as soon as the enemy country has over 0 prestige, you're paying 100 prestige points for a declaration of war. If the enemy has only a few negative prestige points (let's say -10) you'd still pay quite a few points for a declaration of war, though not the full 100.
This all seemed to work fine. However I've now declared a colonial war on France. France has 764 prestige, so I was expecting to pay 100 prestige points to declare war on them. However, I only have to pay 36pts.
So this has rendered what I thought was the calculation irrelevant, so it must be something else. France has much more industry than me (I'm playing as Transvaal), I have a slightly larger military score than them, and I have 400 more prestige than they do. Against the uncivilised nations I always had the advantage in military score, prestige, and industry. If it helps, France is a Great Power, and I am an independant nation (at rank 9).
So this makes me wonder why I am paying less prestige points to declare war on a much better country, when before I've had to pay 100 prestige points just to attack Oranjie!