Country/State humans RP

So one or more of the countries decided to keep their states a secret(If you Roleplay as a Country you can decide this reason).What happens when one of the states appears in front of all the countries at the World meeting?This is a RP based on just that.You can rp as a state or country and find out what challenges come from this discovery

I got this idea from some books and I thought why not make it into a Roleplay?I do take requests and there will be some AUs.
One other thing the states and countries will not look like or have flag features.I did this because I thought it be a good chance for people to describe the looks of the states/countries in their own way.They can have features indicating there a state/country though.