A choropleth map shows world countries colored by economy type, with a legend that filters and highlights selected categories. The visualization supports zooming and panning, and dims non-selected countries while emphasizing those matching the chosen economy. It uses d3.geoPath with the geoNaturalEarth1 projection to render the map, and d3.scaleOrdinal with schemeSpectral for coloring. Country data comes from world-atlas TopoJSON and TSV files, with hover effects and a clickable color legend for interaction.