This fork of a D3.js mapping tutorial displays a world map, rendering countries in light green with black borders on a blue sphere. The visualization uses the Natural Earth 110m dataset loaded via the `world-atlas` package, and projects the geometry with `d3.geoNaturalEarth1` and `d3.geoPath`. A topojson `feature` extracts country boundaries from the data. The SVG output is styled with a CSS class for both the sphere background and individual country paths.