This world map visualizes country boundaries and interior borders using a light gray sphere with teal country polygons and silver interior lines. The example relies on d3-geo’s `geoEqualEarth` projection and `geoPath` to render SVG paths, while the topojson library’s `feature` and `mesh` functions transform the World Atlas TopoJSON dataset into GeoJSON and isolate interior borders. React manages the data-loading state, and the visualization is drawn entirely as SVG within a React component.