This example displays a choropleth-style map of African states, rendered as green SVG paths with white strokes on a dark background. It loads GeoJSON data from a GitHub gist, converts it into geographic features using `topojson.feature`, and projects the shapes with `d3.geoAlbersUsa` and `d3.geoPath`. Each state path includes a `<title>` element showing the region’s name from the data’s properties. The implementation relies on D3 v5 for selection, data loading, and path generation, while the map’s styling is defined in an external stylesheet.