Oh, so we don't end up making nations that are similar -- my nation's going to be a cross between the Polish Commonwealth, Ottoman Empire and Hussites/German Peasants Revolt.

Quick run-down: The not!Ottoman Empire enslaved many peoples but employed some of them as their bureaucrats. Eventually (due to reasons) civil war broke out between the young nobility (who wanted control for themselves) and the old guard supporters of the not!Sultan (predominantly slaves). Slaves (and peasant not!Ottomans) took advantage of this to revolt themselves.

There's now a great deal of tension between the two main factions: young noble democrats (backed by much of the not!Ottoman peasantry), and the proto-communist freemen military (backed by the freed slaves and the not!Ottoman peasantry). They'll have a lot of military potential -- but be in a state of great confusion.