This visualization displays a world map with country boundaries and graticules, rendered as an SVG using React and D3. The map is created from World Atlas TopoJSON data, with land areas filled in teal and graticule lines in light gray. The code uses `geoNaturalEarth1` for projection, `geoPath` to render geographic features, and `geoGraticule` to draw the graticule grid. Interior boundaries between countries are highlighted with a distinct stroke color, enhancing the map’s visual polish.