This choropleth map displays global economic classifications by coloring each country according to a categorical ordinal scale derived from the `economy` property in the world-atlas dataset. The visualization loads TopoJSON and TSV data, then uses `d3.geoPath` with a natural Earth projection to render country boundaries, while a custom color legend built with SVG circles and text explains the color encoding. Users can zoom and pan via `d3.zoom`, with hover effects highlighting individual nations.