Mainly, this is an event that would fire if any Britannic power takes over all of Britannia *So England/Scotland/Ireland* this mainly would turn Scotland into Britannia for a nation. I think Brittania is the most suitable name for the nation, but It'd gain cores on all of England/Ireland/Scotland, accept Cymru,Gaelic,Inglis,and Anglosaxon, and can choose between Lothian, Meath, Wales, and Anglia. This is something that isn't really represented in the game, but would be an interesting thing to have in the game, it somewhat mirrors real life, but England isn't the nation who would be doing it obviously.