This interactive choropleth map displays countries colored by their economy category, using a spectral color scale and a natural Earth projection. Users can click legend swatches to highlight matching regions while dimming others. The visualization is built with D3 v5 modules including `geoNaturalEarth1`, `geoPath`, and `zoom`, rendering vector shapes as SVG. It loads geographic data from the World Atlas TopoJSON and TSV files, processing them via `topojson.feature`. A dedicated color legend component supports selection filtering, while CSS hover effects emphasize individual countries.