This visualization displays a choropleth map of world countries, colored by traveler reviews, alongside a legend and trip table for four travelers. Users can click legend entries to filter and highlight countries visited by a specific traveler. The map uses d3.geoNaturalEarth1 and d3.geoPath for projection, d3.zoom for panning, and d3.scaleOrdinal with schemeReds for coloring. Data comes from world-atlas TopoJSON, a TSV of country names, and a CSV of traveler trips.