This map visualizes global countries colored by economic group, with clicking a country highlighting it while dimming others and the map sphere. A color legend allows filtering countries by economic category, and hovering shows country names. The visualization uses d3.geoNaturalEarth1 projection, d3.geoPath for rendering SVG paths, d3.zoom for pan and zoom, and d3.scaleOrdinal with schemeSpectral for choropleth coloring. Data comes from World Atlas TopoJSON and TSV files, loaded via d3.json and d3.tsv.