This interactive bar chart visualizes the population of ten countries in the year 2000. The chart uses a horizontal layout with a band scale for the categorical country axis and a linear scale for the population axis. Built with React and D3 v5, the visualization renders as an SVG with custom axis components and rectangular marks. Data is loaded from a remote CSV file, and each bar includes a tooltip that formats large population values using the `d3.format` function with SI prefixes.