I'm suprised to see it working so well! In testing, Romans could always squeak out a baby or two. If I'd known it was working, I would have put some documentation about it.

We actually have 3 categories at this time:

- No babies: Rome, Koinon Hellenon, Qarthadast, Aedui, Arverni

- Some babies: Sweboz, Iberia, Casse

- Normal fertility: Dacia, Makedonia, Epeiros, Ptolemaioi, Pontus, Steppe culture (Yuezhi, Pahlava, Sauromatae), Eastern Greeks (Baktria, Arche Seleukeia, Hayasdan)