It has been said you can't have a trade company and a state in the same region. I am wondering if I put the trade company in the Gold Cost region, and a state in the congo region (within trade company region), would that work? Or would the trade company disappear?
Okay, just did a quick test.
Provinces in an area that is turned into a state are removed from a TC and provinces in a state can't be added to a TC. Provinces in other areas within the same TC charter are unaffected so yes, you can have the Gold Coast area in a TC and Kongo in a state. Interestingly, due to the LA floor the TP will be often be lower in the TC provinces than in a state in the same provinces.