This example renders a polished world map using a Natural Earth projection. It displays land masses in teal, country borders, graticules, and a subtle sphere outline. The visualization loads World Atlas TopoJSON data, which is converted to GeoJSON features and a country mesh. The code uses d3.geoNaturalEarth1, d3.geoPath, and d3.geoGraticule to draw the map, while React manages the component structure and state. The SVG output is styled with CSS for a clean, modern aesthetic.