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(Apologies if I'm doing something wrong, I'm completely new to this forum but I thought this was a good place to put this question).

Right now I'm playing a Europa Universalis IV game as the restored Roman Empire. I have Poland in a Union under me, currently annexing them and when I'm done I'd like to make a client state in not only Poland/Lithuania but also the rest of Eastern Europe.
What would be a good name for it?
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