This is a horizontal bar chart of population data for ten countries in the year 2000, rendered as SVG via React. The visualization uses React hooks (useState, useEffect) and D3 v5 scales including d3.scaleBand and d3.scaleLinear, with components for axes and marks. Data is loaded as CSV from a GitHub URL using d3.csv, with each bar’s width mapped to population via d3.max and tooltips formatted using d3.format. Axes are custom-built with React components, and the chart includes a labeled x-axis showing population in billions.