This example shows a horizontal bar chart of population data for ten countries, using SVG rectangles rendered with D3 v5. The visualization scales bar lengths with `d3.scaleLinear` and spaces categories using `d3.scaleBand`, while `d3.axisBottom` and `d3.axisLeft` provide labeled axes. CSS styles the bars in pink, and the code reads from a CSV file, formats tick labels with `d3.format`, and logs clicked elements to the console.