Regarding the crossbowers: What I meant to say was, I have provinces with a Boyer Workshop and a Keep and other provinces with a Boyer Workshop and a Castle.

Actually, I have Denmark with a Citadel and a Boyer Workshop and still can NOT make a crossbower.

I started in the early period. The year is currently 1175.

Can someone recommend a good tech tree (perhaps in Excel). I downloaded the one I have from this website, but it must not be complete.