This example renders a world map from country boundary data loaded from the World Atlas TopoJSON source. The visualization displays all country features as geographic paths, with each nation outlined in a teal stroke color with rounded line joins. The map uses `d3.geoEqualEarth` for the projection and `d3.geoPath` to convert GeoJSON features into SVG paths within a React component. Data is fetched asynchronously using `d3.json` and converted from TopoJSON to GeoJSON via the `feature` function from the `topojson` library.