This choropleth map colors countries according to economic data, with a color legend and hover highlighting. The visualization uses D3 v5 with `d3.geoPath` and `d3.geoNaturalEarth1` for geographic projection, while loading world data from the world-atlas TopoJSON and TSV files. The color scale uses `d3.scaleOrdinal` with the Spectral scheme to map economic classifications. Users can pan and zoom via `d3.zoom`, and country names appear as tooltips on hover.