Something I hadn't thought about with the new culture system (maybe it wasn't indicated before), was the changing of culture based on the provinces you own. I wonder if the tech advancement rate is influenced by that. For instance, grab more european provinces than your asian base & up you go. But then if, instead of Denmark gaining German provinces & losing Danish ones, you have France gaining Chinese ones & losing French ones, would you then (a) become a Chinese-cultured nation? Maybe it's based on continguous province ownership..