This interactive map displays world countries using a Natural Earth projection, with hover highlighting and zoom-and-pan capabilities. The visualization renders SVG paths generated by `d3.geoPath` and `geoNaturalEarth1`, while `d3.zoom` applies transform updates to the map group. Country names come from a TSV file joined to TopoJSON geometry via `d3.json` and `topojson.feature`. Hover states change country fill colors, and the sphere background uses a distinct blue fill.