This example shows a world map rendered as an SVG, with countries filled in light green and the globe as a blue sphere. It demonstrates loading geographic data from a TopoJSON file via `d3.json` and converting it to GeoJSON features using the `feature` function from the TopoJSON library. The map projection and path generation are handled by `d3.geoNaturalEarth1` and `d3.geoPath`, which draw the country boundaries and the sphere outline. The code uses D3 v5 and relies on the world-atlas dataset at 110m resolution.