This choropleth map visualizes ad valorem tariff rates across countries, using a blue color scale with quantile-based bins to distinguish rate magnitudes. Hovering over a country displays its tariff rate in a tooltip, and clicking a country highlights it while dimming others. The map supports zooming and panning, plus a legend showing the color scale ranges. The visualization loads data from a TSV file and world map GeoJSON, rendered using D3.js `geoPath`, `geoNaturalEarth1`, `scaleQuantile`, and `schemeBlues`, all orchestrated within a React application.