I think that the categories should be art, literature, music, architecture, and so on, instead of renaissance, baroque, rococco, etc. There was a progression from renaissance to baroque to rococco, and it would seem more aouthentic to research it like that than to research rococco art before renaissance art.
You may want to change Switzerland's voting to landed, as universal manhood suffrage wasn't adopted until 1879 there. Florence should alternate between democracy and monarchy under the Medicis. If you can change the term democracy in-game to republic, then it would be more correct, though I don't know if that can be modded.