This polished world map uses d3.geoNaturalEarth1 and d3.geoPath to render land masses, graticules, and interior country boundaries from the World Atlas TopoJSON dataset. The SVG output shows countries in teal against a light gray sphere, with subtle grid lines and distinct interior strokes for visual separation. The React component fetches the TopoJSON via d3.json and topojson’s `feature` and `mesh` methods, applying CSS classes for styling.