How can it be, with a POD between 1000 BC and 1000 AD, that Europe, or at least OTL Eastern Europe Minus the Balkans Plus Germany and Poland, is, at this present day, speaking an Iranian tongue, and is culturally Iranian, at least for the majority of the population, so there can be other lower classes. If you can get them to be Zoroastrian, thats a bonus. By Iranian, I dont mean the Farsi language (although if you can do it with that, go ahead), but Iranian languages as in Sarmatian, Ossetian, and Alanian.