This choropleth map visualizes population counts for a selection of twenty countries, shaded according to each nation’s total inhabitants. Built with D3.js v6 and the topojson-client library, the SVG map renders geographic boundaries using d3.geoPath. Country values from the external CSV are joined to the topology, and a continuous color scale encodes population magnitude. Hovering over a country triggers a tooltip displaying the nation’s name and its precise population figure. The map uses a white background, subtle stroke outlines, and a clean, centered layout for straightforward comparison.