This example displays a world map using a natural Earth projection, with countries filled in light green against a dark blue sphere. It loads geographic data from the World Atlas TopoJSON file and converts it to GeoJSON using the topojson `feature` function. The visualization relies on D3 v5’s `geoPath` and `geoNaturalEarth1` for rendering, while the projection path is drawn for the entire sphere. The map is rendered as SVG elements, with country paths and a separate sphere path added to the canvas.