This example shows a natural Earth projection map of world countries, with landmasses rendered in light green against a blue sphere. It uses D3.js v5 with the `geoNaturalEarth1` projection and `geoPath` to generate SVG paths. Country boundaries come from the world-atlas TopoJSON dataset, accessed via the `topojson.feature` API. The map displays both the graticule-like sphere outline and individual country paths, with stroke opacity for boundary separation.