Spinning Wheels

Advance tree

1. Global Trade
2. Bole Smelting
3. Slitting Mills
4. Foreign Mining Techniques
5. Firmer Financial Control
6. Spinning Wheels
7. Scientific Experimentation
8. The Transhumance Networks Only some countries
9. The Silk and Rose Guilds Only some countries
10. Granary of Europe Only some countries
11. Silk Road Waystations Only some countries
12. The Eubean Tidal Mills Only some countries
13. The Neopatras Horse-Breeding Program Only some countries
14. The Mining Captancy Only some countries
15. The Aqueducts of Popovo Polje Only some countries
16. The Mining Grants Only some countries