SPAM mails from Germany

I use Windows 10 and Outlook. During the last, let’s say, 3 months, I have noticed that SPAM mails only seem to come from Germany. As most of you hopefully know, Copenhagen in Denmark, where I live, is not a part of Germany. I was just wondering if anyone knows the reason for this difference. I would, of course, like to stop the German mails too and, anyway, I do not understand very much German. Kind regards, John Watson