This example visualizes world countries on a natural Earth projection, colored by economic category from the World Atlas dataset. The map supports zoom and pan, with hover effects that highlight individual countries. It uses D3 v5 for SVG rendering, combining `d3.geoPath` for map geometry, `d3.geoNaturalEarth1` for projection, and `d3.zoom` for interaction. TopoJSON converts the country boundaries, while TSV metadata (shared via `loadAndProcessData`) enriches each feature with names and economy values, which drive the ordinal blue color scale.