This choropleth map visualizes World Bank GDP per capita (PPP) data for 2020, assigning colors to countries based on their economic output. The map renders d3.geoPath shapes with a natural Earth projection and a YlGnBu color scheme, using a d3.scaleQuantile scale to bin the data into nine quantile-based classes. Countries missing data appear gray. The visualization fetches both a world atlas TopoJSON file and a CSV dataset via Promise.all, parsing the latter after skipping an initial header offset.