This example demonstrates how to create a world map using D3.js and TopoJSON. It displays countries as light green geographic regions against a blue sphere, using the Natural Earth projection via `d3.geoNaturalEarth1` and rendering paths with `d3.geoPath`. The map loads geographic data from the world-atlas TopoJSON file, extracting country features with the `feature` method from topojson. SVG paths are appended for each country, with styling applied through CSS classes for the sphere and country boundaries.