This example shows a polished world map with country boundaries, graticules, and a highlighted sphere background. It uses d3.geoNaturalEarth1 and d3.geoPath to project GeoJSON features from the World Atlas TopoJSON dataset, with React rendering the SVG marks. The code explicitly separates land features, interior borders via topojson.mesh, and graticules using d3.geoGraticule, styled through CSS classes for a clean, muted color palette.