This example shows a horizontal bar chart of the top ten countries by 2020 population, loaded from a CSV file using d3.csv and rendered as SVG elements. React manages the data state and maps each row to a styled rectangle, with d3-scale’s scaleBand and scaleLinear computing the bar positions and widths. The chart applies a simple margin convention using a translated group element, and d3.v5 utilities fetch and parse the numeric population values before React re-renders the visualization.