This catalog groups 2 Collections. Each carries its own AGENTS.md with join keys, quirks, and tested queries, so follow the per-collection guides below.
Natural Earth Countries (1:110m), 177 polygons, guide at ./natural-earth-countries/AGENTS.md
Natural Earth Populated Places (1:50m), 1,251 points, guide at ./natural-earth-populated-places/AGENTS.md