2/ First up, Luxembourg π±πΊ is a constitutional monarchy headed up by a Grand Duke. It is a last remnant of a time when central Europe was a patchwork of tiny fiefdoms.
https://en.wikipedia.org/wiki/Grand_duchy
Long-time followers will recall we asked about "non-kingdom monarchies" as our March 2023 #fridaygeotrivia question.
https://blog.opencagedata.com/post/geotrivia-march-2023
3. π±πΊ Luxembourg's capital is ... Luxembourg City, thus also making it a correct answer in our July 2022 #fridaygeotrivia question, where we asked for countries whose capital has the same as the country.
https://blog.opencagedata.com/post/geotrivia-july-2022
#geoweirdness