This interactive map displays global economies using a color-coded choropleth, where clicking a country selects it and dims all others. The legend also supports click-to-filter, highlighting matching color values. Built with D3 v5, it uses `geoNaturalEarth1` and `geoPath` for the projection and rendering, with `zoom` for panning. Data comes from the World Atlas TopoJSON and TSV files, with color values mapped via `scaleOrdinal` and `schemeSpectral`.