The humans didn't stand a chance against us. They had no idea that we were going to attack them, hell, they didn't even know we existed. A great advantage on our side. We were hundreds of vampires, witches and werewolves. We attacked all the continents at once. It took less than a day to conquer the human world. Can't say the same for getting the new nation in order though. It took us about two years to get everything to function properly. When everything was in control, we wanted to eliminate all potential threats to secure our position as the worlds rulers.