Got my claim Worked out! http://imgur.com/a/LjPrV
Gonna go with a republic of heretics, who turned into slave drivers! 

Copied out of Chatzy: 
My base idea was that in a dutchy of the Justinians Empire, a small sect began to question the nature of their god-Emperor. Calling themself "The society of doubt" they began to spread their ideas, and slowly build up an Ideology around the idea that Justinian was a man, and that if gods exist, they are little more then tyrants, that have to be fought, rather then worshiped. It took a few years for the sect to be found, but the answer of the Empire was brutal and swift. Putting the whole dutchy to the sword, the surivers felt to Nagath, and swore fealty to the dark lord! This was the beginning of the Brass Republic.
My idea was that they started off as decent people, but then ended up more and more corrupted by the land, turning form a "true" republic, into a decadent society of brutal slavers, holding up their perverted old virtues, and eager to end the tyranny of all gods!