This choropleth map displays global economic classifications, coloring each country with an ordinal spectral scale based on its economy attribute. The visualization includes an interactive legend where clicking a category filters the map, dimming non-matching countries and highlighting selected ones. Built with React and D3 v5, it uses `geoPath` and `geoNaturalEarth1` for map projections, supports zooming via the `zoom` API, and loads country boundaries and data from the world-atlas package. The legend is interactive, with click handlers and animated transitions.