Just like to mention, I've triggered a Rebellion which forms the United States, but it's odd, frankly.
1. They don't give you the option to side with the Americans. I don't know why, since supposedly you get to pick your sides.
2. They show up as a constitutional monarchy, not a republic.
3. The flag looks weird, switching between the circle of stars in the field of blue, and a white crown.
Not sure if anyone else has come across this when playing the Protectorate.