This example displays a world map using a natural Earth projection, with countries rendered as filled SVG paths and a purple sphere background. It loads geographic data from the World Atlas TopoJSON dataset, converting it to GeoJSON features via `topojson.feature`. The visualization applies `d3.geoPath` with a `d3.geoNaturalEarth1` projection to draw the rendered paths, while CSS styles control the fill and stroke appearance of each country.