The Geopolitics were pretty much 'made-up'.

For example, I envisioned the area I did, the Thanelands of Skoldavia, as somewhat Norse with maybe a little Celtic/Saxon infusion. That's my area, but that doesn't mean that is the predominant theme of the land. The Plaguelands to me seem a little more Germanic in feel, while further south more Arabic.

Again, this is just my feelings on it.