This choropleth map uses color to depict the economic classification of each country, rendered as an SVG via D3's `geoPath` and `geoNaturalEarth1` projection. Hovering a country turns it gray and reveals its name and economy in a tooltip. The map loads world geography and tabular data from the world-atlas package, and displays a color legend built with custom `colorLegend` logic. The visualization supports zooming and panning through D3's `zoom` component.