I can't seem to finish off mission 11 of the tutorial. Im trying to be the "favored" trading partner. I've built trading consulates, given subsidies and it even says in the diplomacy information box that im the "best trading partner". But I can't finish the mission. Bug!
HELP!

Strange, all you need to do is open a trade consulate with for example Denmark, then end turn, put in a subsidy like 25% with Denmark, end turn and then it goes to mission #12

I did figure this out. The help text is confusing. It never really defines what a "neutral" or "minor" state is. I assumed it was an old world minor nation. Turns out its a new world minor nation. I was able to do it an move on after i figured that out.

No, it works with old world minors as well, like I said, Denmark. Just tried it again, only takes 2 minutes.