Hi Chris, As I said in other places, more and more categories or subcategories, is not necessarily a good thing. R. Hutchins brings up a very real problem with this. What about areas that changed political boundaries? I still say that those looking for all entries about Atlanta, Georgia, USA can do a Search G2G and find all the Atlanta entries.
What about St. Louis, Missouri, USA? It has been:
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St. Louis, Kingdom of France 1764
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St. Louis, Viceroyalty of New Spain 1767
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St. Louis, Republic of France 1800
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St. Louis, Louisiana Purchase 1803
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St. Louis, Missouri Territory 1812
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St. Louis, Missouri 1821
The only possible subcategories, as I see it, would have to be geographical, not political. So if you feel a need to have subcategories (and as I said, I do not), I would suggest: Europe, Asia, Africa, Australia, North America, South America, Central America, and Islands.
Thanks for all you do!