A world map displays country boundaries projected with the equal Earth projection. The visualization loads GeoJSON data from World Atlas TopoJSON and renders it as SVG paths using React and D3’s `geoEqualEarth` and `geoPath`. Countries are styled with a teal stroke and no fill, giving a minimal outline appearance. The code uses `topojson.feature` to convert TopoJSON to GeoJSON, and the map fills a 960 by 500 viewport.