A horizontal bar chart ranks the ten most populous countries by their 2020 UN population estimates. The visualization loads CSV data via d3.csv, maps it to a linear scale for population and a band scale for countries, then renders SVG rectangles using React components. D3 v7 handles the scales, while React manages the component structure, rendering axes and marks as reusable functional components. All elements are drawn with SVG within a fixed viewport, with loading state managed through React hooks.