This example visualizes a world map with countries rendered as yellow shapes on a red spherical backdrop, using D3.js (d3.v5) to project geographic data. The visualization employs `geoEquirectangular` for map projection and `geoPath` to generate the path data, while TopoJSON’s `feature` method converts country boundaries from the `world-atlas` JSON source into GeoJSON features. The map is drawn as an SVG graphic, with CSS hover effects that change country fills to green, and the sphere is styled via the `.sphere` class.