But you want to talk about geography and the safety of Jewish populations? Three words: Danish. Fishing. Boats. Which is also, incidentally, how one of my Swedish cousins-in-law survived to become one of my Swedish cousins-in-law instead of being one of the little Austrian Jewish girls who died in a concentration camp. Denmark didn't have mountains, but it's surrounded by water on all sides, and you cannot possibly get all the Danes off the water for the entire duration of the war. You'd have restless starving populations. Bad business all around. So instead you let the Danes putter around in their tiny little boats, and if they keep coming back with one or two fewer fishing hands than they departed port with, gosh, what careless Danes.

Another, non-geographical factor: the King of Denmark, God bless him, was foursquare and solidly behind Denmark's Jews, overtly rather than Boris of Bulgaria's possibly maybe we think secretly. He made it clear that loyal Danes would support and protect their brothers and sisters who happened to be Jewish and would hide them if it came to that. Haakon VII up in Norway followed his example, and for a Norwegian to admit that a Norwegian followed a Dane's example is really something. I was raised making the H7 of the Norwegian resistance as a default small symbol along with a star and a heart. But Christian X was a heckuva guy.