This choropleth map visualizes global economic classifications by country, coloring each nation according to its economy category. Built with D3 v5, it uses `d3.geoNaturalEarth1` for projection and `d3.geoPath` to render the map from TopoJSON world-atlas data, with country attributes loaded from a TSV file. A color legend, constructed via `colorLegend`, displays the ordinal color scale using `d3.scaleOrdinal` and `d3.schemeSpectral`. The SVG map supports zooming via `d3.zoom`, and hovering changes a country’s fill to red.