This example displays a choropleth-style map of the United States, with each state rendered as a separate SVG path using a topojson dataset. It shows state boundaries and names via tooltips. The code uses D3 v5’s `geoAlbersUsa` projection and `geoPath` to generate the paths, while `topojson.feature` converts the TopoJSON topology into GeoJSON features. The map is drawn with SVG elements, and the data is loaded asynchronously from a GitHub gist using D3’s `json` method.