This example presents an interactive world map rendered with SVG using React and D3. It visualizes land masses, country interiors, graticules, and the sphere using `d3.geoNaturalEarth1` and `d3.geoPath`. Geographic data comes from the world-atlas TopoJSON dataset, processed via `topojson.feature` and `topojson.mesh` in a custom `useData` hook. The map uses distinct colors for land, interiors, and sphere, with a muted graticule overlay, all styled through CSS.