This example displays a world map using a natural Earth projection, rendering countries as green SVG paths with subtle black strokes against a blue spherical backdrop. It loads GeoJSON country boundaries from the world-atlas TopoJSON dataset via the `json` method, then processes them with `topojson.feature`. The visualization applies `d3.geoNaturalEarth1` for projection and `d3.geoPath` to generate the SVG paths, with the sphere outline drawn separately before the country features are appended.