This example displays a natural Earth projection world map, with graticules, landmasses filled in teal, and country borders rendered as distinct interior lines. It uses React to manage the component structure, along with d3-geo APIs such as `geoNaturalEarth1`, `geoPath`, and `geoGraticule` to project and draw the geometry. Geographic data comes from the World Atlas TopoJSON, processed with topojson’s `feature` and `mesh` functions to extract land polygons and country boundaries.