This example shows a world map rendered with landmasses in teal and country borders in a lighter teal, overlaid with graticules and a sphere outline. The visualization uses a Natural Earth projection via `geoNaturalEarth1` and `geoPath` from D3 to draw geographic features. TopoJSON data from the world-atlas package is loaded with `d3.json` and converted to GeoJSON using `feature` and `mesh`. React manages the component structure, and the map is rendered as SVG elements styled with CSS.