This visualization displays a world map where each country is colored according to its population using a logarithmic rainbow color scale. The map is rendered as SVG using D3.js v7 with a Natural Earth projection and TopoJSON data loaded from world-atlas. Countries are drawn as paths using d3.geoPath, with colors assigned via d3.scaleSequentialLog and d3.interpolateRainbow based on population values from an embedded dataset. Hovering over a country triggers a tooltip showing additional information.