The production of beer is the source of civilization as we know it. Alcohol was the only thing that coldn't be gathered from nature in constant manner so we created fields, houses for the farmers, etc. Civilization is just a byproduct of our need to get drunk (the fact that alcoholic drinks were safer and have less bacterias and parasites than any water around also helped a lot).
What kind of thing did you do that you even left your mark on their history!?That day was somehow established as the Underworld's Liberation Day....