This interactive choropleth map displays world economies color-coded by category, with a legend that allows users to click on a category to filter the map's display. The visualization uses a D3.js geoNaturalEarth1 projection and geoPath to render country shapes, with a sequential color scale derived from d3.schemeSpectral. Data is loaded from World Atlas. Hovering a country reveals its name and economy type. Clicking a legend item dims non-matching countries and brightens those in the selected category.