This example renders a natural Earth projection world map using React and D3 v7. It displays landmasses in teal, country borders as interior lines, graticules, and a blue sphere background, all drawn as SVG paths via `d3.geoNaturalEarth1`, `d3.geoPath`, and `d3.geoGraticule`. Geographic data comes from the World Atlas TopoJSON dataset, processed with TopoJSON’s `feature` and `mesh` functions. The React component loads the data asynchronously and conditionally renders the map once available.