This example displays France as a single green country on a blue background, projected using the Mercator projection centered on coordinates [2, 47]. The visualization uses D3’s `d3.geoMercator` and `d3.geoPath` to convert geographic coordinates into SVG paths, sourcing country boundaries from the world-atlas TopoJSON dataset. The code filters the original GeoJSON for France’s name property and renders it with a light-green fill and black stroke.