This example displays a world map of country boundaries using a Natural Earth projection, with graticules and interior borders rendered in a polished teal-and-grey color scheme. It uses React to manage the component structure and d3-geo’s `geoNaturalEarth1`, `geoPath`, and `geoGraticule` APIs to generate SVG paths. Geographic data comes from the World Atlas TopoJSON file, which is parsed with `feature` and `mesh` from topojson, while the final visualization is drawn entirely as SVG elements.