This choropleth map displays global economic classifications by country, with a color legend that doubles as an interactive filter. Clicking a legend item dims all countries not in that category, while hovering over a highlighted country reveals its name and value via a native SVG tooltip. The map uses an orthographic natural Earth projection rendered as SVG paths, with zoom and pan enabled through d3.zoom. Data comes from the World Atlas TopoJSON and TSV files, processed with topojson.feature and d3.tsv. The color scale uses d3.scaleOrdinal with the Spectral scheme.