This fork of a choropleth map colors world countries by their economic classification using an ordinal color scale with a spectral scheme. The map uses the Natural Earth projection via `d3.geoPath` and `geoNaturalEarth1`, with data loaded from the World Atlas TopoJSON and TSV files. A custom color legend displays the categorical values with circles and text. The visualization supports zooming and panning through `d3.zoom`, and includes hover effects that highlight countries in red.