This visualization renders a world map using D3.js (v5) and TopoJSON, with countries displayed as green-filled paths with black outlines on a blue background. A sky-blue rectangle with a yellow stroke frames the map, created via the `geoEquirectangular` projection and `geoPath` method. The code loads country boundary data from the `world-atlas` package hosted on jsDelivr, converts the TopoJSON features to GeoJSON using the `topojson` library, and renders each country’s path into an SVG element.