This example shows a world map rendered with D3.js using a natural Earth projection, displaying countries as light green polygons against a blue sphere background. The visualization loads geographic boundary data from the World Atlas TopoJSON file and converts it to GeoJSON features using the topojson feature API. The map is drawn as SVG paths using d3.geoPath with the d3.geoNaturalEarth1 projection, while the spherical outline is created by passing a Sphere geometry object to the same path generator.