This choropleth map visualizes world countries, with each country’s color determined by its `iso_n3` identifier using a categorical color scale. The map is rendered as SVG paths generated from a Natural Earth GeoJSON dataset via `d3.geoPath` and `d3.geoNaturalEarth1`, with a sphere background. Tooltips display country names and economy data from a TSV file, and hovering turns a country white.