This map visualization displays global economies using a choropleth projection, where each country’s color corresponds to its economic classification from World Atlas data. Users can click individual countries to highlight them and dim all others, with a legend that also supports filtering by economic category. The implementation uses d3.geoPath with a geoNaturalEarth1 projection, d3.zoom for panning, and d3.scaleOrdinal with schemeSpectral for coloring. TopoJSON loads the geographic boundaries, while SVG paths render the interactive map and legend controls.