This example shows a world map rendered as a choropleth of country boundaries, with a light gray graticule grid and sphere outline drawn behind them. The visualization uses React to manage the SVG output and d3’s `geoEqualEarth` projection, `geoPath`, and `geoGraticule` to construct the geographic shapes, while TopoJSON’s `feature` and `mesh` methods parse the World Atlas dataset for country polygons and interior borders. Country fills use a teal color, and boundary lines are styled via CSS classes.