This choropleth map visualizes global economic data using a natural Earth projection, with countries colored on an ordinal red-yellow-green scale. Users can click legend items to filter the map, dimming non-matching countries and fading the sphere background. Built with React and D3 v5, it uses d3.geoPath, d3.geoNaturalEarth1, d3.zoom, and d3.scaleOrdinal, with data loaded from world-atlas TopoJSON and TSV files. The SVG rendering includes smooth transitions on legend circle updates.