The world has a lot of different standards for a lot of things, but I have never heard of a place with the default screw thread direction being opposite.
So does each language have a fun mnemonic?
Photo credit: https://3.bp.blogspot.com/-Giy8OrYJTjw/Tfm9Ne5o5hI/AAAAAAAAAB4/c7uBLwjkl9c/s1600/scan0002.jpg
Yup this was me. I knew it was the third, but it never occurred to me to ask what the other 2 were
TBH I knew about the Kaiserreich, but I had to look up the first one myself. It was the Holy Roman Empire. (Which wasn’t really much of a reich, but the Nazi’s weren’t noted for their attention to historical accuracy)