This example shows a polished world map with landmasses in teal, country boundaries as interior lines, and graticules over a light gray sphere. The visualization uses React to render an SVG, with `d3.geoNaturalEarth1` for projection and `d3.geoPath` for drawing shapes. Geographic data comes from the World Atlas TopoJSON, processed via `feature` and `mesh` from topojson. The code separates data loading (`useData`), mark generation (`Marks`), and styling, displaying a loading message while fetching.