This bar chart displays the population of 20 countries for the year 2010, sorted by country name along the y-axis. The visualization uses React with D3 v5 scales, rendering an SVG with colored horizontal bars. D3’s `scaleBand` and `scaleLinear` map country names and population values, while the tick format converts values to billions. Data is loaded from a remote CSV via D3’s `csv` method, and interactive tooltips appear on each bar using SVG `<title>` elements.