"I'm going to add articles for each culture, province, state and country in the game."
That would be hugely overkill, and not a good thing for the wiki (except for every country, that's great). There is no reason to have individual pages for individual cultures, states, and provinces, as all it leads to is page bloat, making the wiki more disorganized, and making it perform worse.
On a related note, categories with next to no pages in them are also generally useless (E.G., the rich strata category you created. The population category on the other hand was a great idea). Also, all pages, category names, etc. should only have the first letter capitalized unless it is a proper noun.
Thank you for contacting me, I'll leave the cultures, states and provinces be at your request. On second thoughts, I can see where you are coming from. I will however add a list of the cultures within the game as I don't so far see one on the wiki yet or anywhere else for that matter.
Sorry about the category and attempted content bloat, I will make sure they are more encompassing next time.