[jowdones]

As a Romanian who had to study German in school, I testify to that. I still remember the word "Umweltverschmutzung" but no idea if it's der, die, das, dem or des umweltverschmutzung :P

[jamil7]

A small trick with the words ending in "-ung" is they're often feminine so "die" in nomanative.

[jowdones]

I would have bet on "die", just coze it "sounds right".