This world population map visualizes population data for 30 countries using a choropleth encoding, where countries are shaded from light pink to dark red based on population size. Powered by D3.js v7 and TopoJSON, it renders geographic outlines with a Natural Earth projection and geoPath, overlaying a graticule for reference. Hovering highlights a country in gold and displays a tooltip with its name and population in millions. Population figures come from a hardcoded dataset applied via d3.scaleThreshold.