This colorpleth map colors countries by their economy classification using an ordinal color scale. The visualization allows interactive filtering by clicking on legend items, which re-renders the map to highlight only the selected category. Built with React and D3 v5, it uses `d3.geoPath` with a natural Earth projection and draws countries as SVG paths from TopoJSON and TSV data loaded from the world-atlas package. Hovering a country turns it red, and the legend is rendered using the `colorLegend` component with custom click handling.