Where would be the best place on Stack Exchange to ask a specific question about the law of a political entity that no longer exists, such as the Confederate States of America (CSA), East Germany (DDR), the Inca Empire, or Sparta?
These questions would seem to be on-topic on at least two sites:
Law.SE - This site, however, seems to be populated mostly with experts on current or at least modern legal systems, not necessarily people who know much about the minimum requirements for valid service-of-process in the Danelaw or whether civil divorce was possible in the Iroquois Confederacy.
History.SE - This site markets itself as a great one for asking answerable, non-trivial questions about history, but the main focus does not seem to be law. There is a law tag on the site, but as of this point it only has 226 questions, less than 2.5% of the total non-deleted questions on the site, leading me to believe that law is not the specialty or even primary interest of most of the site's regulars.
Are both of these sites more or less equivalent for asking these sorts of questions, or is there a greater likelihood of getting a good answer on one of them?