This bar chart displays the top 10 countries by population in the year 2000, using horizontal bars ordered alphabetically by country name. The React app fetches CSV data from a GitHub repository, filters it for the year 2000, and renders SVG rectangles using `scaleBand` and `scaleLinear` from d3 v6. The visualization includes styled axes, tick marks, and an axis label, with a lightweight tooltip showing exact population values via the SVG `<title>` element.