Fork of Let's make a map with D3.js!
This visualization shows a simple world map rendered as an SVG, with countries filled in light green against a blue spherical background. It uses the `d3.geoNaturalEarth1` projection and `d3.geoPath` to draw geographic features. Country boundaries come from the World Atlas TopoJSON dataset, which is fetched via `d3.json` and converted to GeoJSON using `topojson.feature`. The sphere outline is drawn first as a full-path shape, followed by individual country paths. Styling is handled through CSS classes, with stroke opacity creating subtle boundary lines.