This choropleth map visualizes global economies using a categorical color scale, with countries colored by their economic classification. The map supports interactive filtering through a clickable color legend, which selects a specific economy category. The visualization uses d3.geoPath and d3.geoNaturalEarth1 for map projection, d3.zoom for pan-and-zoom navigation, and a d3.scaleOrdinal with the d3.schemeSpectral palette. Data is loaded via d3.tsv and topojson from the World Atlas dataset, and the map is rendered as SVG elements.