Why do they hate Spain so much?
Because they had finally conquered it as Al-Andalus. Ruling it from the shadows behind their Muslim attack dogs. They opened the gates of many of the cities. And enjoyed favoured status under the new rule.
That is their ultimate goal and the purpose of the Muslims they had such an intimate hand in creating. To hide behind a feral warrior class of expendible Goyim and rule the world.
They hate Spain because they threw them out and kept them out with the Inquisition.