A forkchoropleth is a world choropleth map that colors countries by their economy classification, using a spectral color scale. The visualization includes a color legend with labeled circles and a zoomable, panning map where hovering highlights individual countries. Built with D3 v5, it uses `d3.geoPath`, `d3.geoNaturalEarth1`, `d3.zoom`, `d3.scaleOrdinal`, and `d3.schemeSpectral` to render SVG paths from TopoJSON world-atlas data, with tooltips showing country names and economic groups.