Writers need constant access to reference information from credible sources. Generative AI responses and even Wikipedia articles are sometimes not credible enough (although my buddy Bredebot heavily uses the former).
If you need to understand the borders of a particular country, once resource I’ve run across is Barry’s Borderpoints. Interested readers can not only learn about the borders themselves, but also about the identification of the borderpoints, as well as the “tripoints” (places where three countries come together).
Some of you may have interest in Ukraine’s borders with friend and foe. Barry’s article on Ukraine is here.
Bredemarket 