This world map visualizes country boundaries using Natural Earth projection, with countries filled in dark green, graticules in grey, and interior borders in dark grey. The visualization uses React for component structure, D3 v5’s `geoNaturalEarth1`, `geoPath`, and `geoGraticule` for map rendering, and TopoJSON’s `feature` and `mesh` functions to parse world-atlas data. Hovering over a country reveals its name via an SVG `<title>` tooltip.