This example displays a world map rendered as yellow countries with purple outlines on a black background. It uses d3.json to load country boundary data from the world-atlas TopoJSON file, then applies d3.geoNaturalEarth1 projection and d3.geoPath to draw each country as an SVG path. The code selects the SVG element, extracts country features with topojson.feature, and binds them to path elements. The map is static, showing all countries at once without interaction or animation.