A world map is rendered on a blue sphere using D3.js v5, with countries shown as light green paths. The visualization loads geographic data from the world-atlas TopoJSON file via `d3.json` and converts it to GeoJSON using the `feature` function from topojson. The `geoNaturalEarth1` projection and `geoPath` generator draw the countries and the sphere outline, while SVG elements are selected with `d3.select`. The map is static, with no interaction or animation.