This example shows a horizontal bar chart of population data for 30 countries in the year 2020. The chart uses React components for the axes and marks, with D3 scales for positioning. The bar lengths are proportional to each country’s population, and hovering over a bar reveals the exact value via a native tooltip. Data is loaded as CSV from a GitHub repository using `d3.csv`, and the chart is styled with light green bars, blue axis lines, and the Poppins font.