First you claim the Catholic Church authorized polygamy and when asked for a reference, you provide the example of a non catholic parliament.
You’re not the knowledgeable person you pretend to be on the internet. You sure sound authoritative though.
Learn it first. Then we'll talk. But what you need to look for is "plural marriage" and then look for "germany" within those results using the "find" command on your browser. Then you can find out what people CLAIM the RCs were up to back in the day. Note, I did not say the pope did it, just that I've seen it asserted ~ hence the word "supposedly".
If you want to get uppity about Religion I'd like to remind you that the Guise Faction conducted the first ambush in the French Religious Wars, so it's ALL your fault!