Welcome to Harry Potter Theory. Today we’re discussing WHAT IF Gellert Grindelwald had been the winner of his infamous duel with Albus Dumbledore.
As many of you will know, in 1945, Albus Dumbledore at long last challenged the dark wizard Grindelwald, defeating him in a duel, which ended Grindelwald’s reign of terror over the Wizarding community and put a stop to his frightful rise to power. This duel, of course, came decades after the two men had formed an intense bond in their youth. In fact, according to Dumbledore’s own admission, Albus was in fact in love with Gellert as a young man. Their relationship was initially built upon a foundation of shared hatred towards Muggle-kind, and they dreamed of a world in which witches and wizards would conquer the non-magical world and make them into a subservient people. 
Fortunately, for the greater magical community at large, Albus Dumbledore’s reverie of this dystopian version of the world was obliterated when his younger sister, Ariana, was killed in a misguided argument between himself, Gellert, and Aberforth, Albus’ younger brother, turned fatal. After this tragic incident, the two young wizards parted ways, as their ideologies began to diverge drastically.
Many years later, Gellert began his infamous rise to power in pursuit of making the world he’d once envisioned alongside Dumbledore a reality. It’s at this point in their shared history, that we discovered that Grindelwald and Albus had made an unbreakable vow with one another never to oppose the other. This was done at a time when they both believed they wanted the same thing: domination over the human race. Unfortunately, this vow prevented Dumbledore from putting a stop to all the evil things Grindelwald did for decades.
BUT, as I mentioned at the start of this video, there eventually came a time in which Albus was able to overcome the vow, challenge Grindelwald, and ultimately defeat and imprison him. The question I raise with you now is: What would have happened if Albus Dumbledore had NOT won this fight? What would the Wizarding World have looked like if the winner had, in fact, been Gellert Grindelwald instead?
Indeed, there are a many number of questions that this alteration to the past brings about. First, and foremost, to any great fan of Harry Potter anyways, the question that comes to mind is: What would’ve happened to the great and powerful Albus Dumbledore?