For centuries, two systems of magic have existed side-by-side, the Western System as taught by Hogwarts,Beauxbatons,Durmstrang and Ilvermorny and the Eastern System as taught by Mahoutokoro. There was a magical and invisible Wall that prevented practitioners of the two systems from interacting with,perceiving or even knowing about each other. Until now.
What exactly are you expecting to get from this information other than a meeting of one fictional world that happens to segregate itself by what part of the world you live in? Gonna need something more of a prompt than 'here is this stuff based on a magical series of books that is uber popular".