This example visualizes the geographic boundaries of the world’s countries using a React-based application with D3. It loads TopoJSON data from the World Atlas and converts it to GeoJSON via the topojson `feature` function. The map is rendered as SVG paths using `geoEqualEarth` and `geoPath` from D3, with each country stroked in teal. The visualization demonstrates a clean, stylized presentation of global land masses.