I'm terribly sorry, but I HAVE to know more about the convergence of spheres and the "don't put Cedric on the isle, fleebag" story. Ur an amazing writer and very complex w with your storytelling! Yoh absolute genius!
I'm so sorry I didn't answer this sooner! I feel terrible...
So, the "Convergence of the Spheres" concept comes from The Witcher series by Andrzej Sapkowski. I'm suuure you've heard of it, lol. I think the whole "Mandela Effect" thing is based on the same concept too. Basically, the idea is that multiple worlds/dimensions get merged together into one.
My theory is that a similar thing happened in Descendants when the United States of Auradon is formed. All of the Disney Kingdoms are transported through space-time to merge into this new world.
Throughout Sofia the First, we see that Sofia is able to contact other Princesses across space-time using the Amulet of Avalor. She gets visited by Aurora (Prince Phillip reveals in Sleeping Beauty that they're in the 14th century) along with Tiana (20th century). Sofia even travels back in time HERSELF when she is called to help Princess Charlotte of Isleworth, who had the Amulet of Avalor before Sofia got it.
Sofia has a connection to all the Disney Princesses and their realms, and her series shows her to have a lot of magical potential. My idea is that a group of powerful magic beings got together and combined their magic to bring all the Disney Kingdoms together, across space-time, to form the continent of Auradon. Main contenders for this group are Sofia the First, Genie, Fairy Godmother, and Merlin: they're all shown to have knowledge of space-time travel.
I think Beast would have been elected King after the formation of the Auradon supercontinent... All the kingdoms would need to be together to vote. So that begs the question: why did this Magical Council decide to create the Convergence? Was it an accident? An attempt to stop some kind of major threat? I haven't figured that mystery out yet. I lean towards the latter: if Beast somehow acted as a hero during this crisis, it would definitely explain why everyone would be so willing to elect him as the King of Auradon.
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Now for the Cedric issue. King Beast goes HARD on all the Villains. And not just the Villains either: other media shows that all the minions get sent to the Isle of the Lost too. Even minions who reformed (notably Iago, who reforms in Aladdin 2: Return of Jafar). Everyone is getting punished for their crimes.
You know who that flies in the face of? Sofia. She makes a big point of forgiving Cedric the Sorcerer and allowing him the chance to change. She is NOT going to let him be thrown onto the Isle for crimes of which she already exonerated Cedric (More specifically, her step-dad exonerated Cedric at Sofia's insistence).
Neither King Beast nor Sofia back down, so Sofia leads Enchancia in seceding from Auradon. I imagine several other kingdoms go with them. Maybe Kuzcotopia (Kuzco wouldn't let Kronk, former minion of Yzma, get thrown onto the Isle) and Avalor? This would explain why these kingdoms aren't on the map of the Auradon continent.
Anyway, that's the gist of it. Sorry if this was long-winded. >.<
