This choropleth map visualizes GDP per capita (PPP, current international dollars) for 2020, with countries colored on a sequential YlGnBu scale. Countries missing data appear in orange. The visualization uses D3’s `geoNaturalEarth1` projection, `geoPath`, and `scaleQuantile` to map the World Bank dataset, which is fetched as a CSV and parsed with `csvParse`. The map renders country outlines, a graticule, and an outline using `geoGraticule`, with data joined to country features via a `Map` keyed by three-letter country codes.