This map visualization displays the world's population in 2020 using a Natural Earth projection. Each country is drawn as a shaded geographic region, with a semi-transparent circle centered on its centroid, where the circle's area is proportional to the population. Countries missing data are highlighted in pink. The visualization is built with D3.js, using `d3.geoPath` for map rendering, `d3.geoNaturalEarth1` for projection, and `d3.scaleSqrt` for the circle size scale, with data loaded from CSV and TopoJSON files.