This bar chart displays the population of 20 countries in 2010, sorted alphabetically along the vertical axis with horizontal bars extending to population values. The visualization uses React with D3 v5 modules including scaleBand, scaleLinear, and format to construct the SVG. Data is loaded via d3.csv from a GitHub-hosted CSV file, with the raw ’2010’ values multiplied by 1000 to represent actual population counts. Green bars include native SVG `<title>` tooltips showing formatted population values, while axis ticks and labels are styled with custom CSS.