This example displays a world map as a sphere with country boundaries, landmasses, graticules, and interior borders rendered in SVG. It uses D3’s `geoNaturalEarth1` projection, `geoPath`, and `geoGraticule` to draw geographic features, with TopoJSON providing country and land data from World Atlas. React manages the component state, fetching the TopoJSON data asynchronously and passing it to a `Marks` component that applies CSS-styled paths.