This example shows a world map rendered as an SVG with countries filled in green, oceans in light blue, graticules as light gray lines, and interior borders in dark gray. The visualization uses the D3 geoNaturalEarth1 projection with d3.geoPath to draw the sphere, graticule, land, and country boundaries from TopoJSON data sourced from the world-atlas package. The React component fetches the TopoJSON with d3.json and converts it using the topojson feature and mesh functions.