A horizontal bar chart displays population figures for 20 countries, with bars extending from a shared left axis. The visualization uses React with D3 v5's `scaleBand` and `scaleLinear` to map country names and population values, while `csv` loads data from a GitHub-hosted CSV file. SVG rectangles render each bar, with axes generated via custom React components. Population values are formatted using D3's `format` function, converting numbers to abbreviated labels like "B" for billions.