A horizontal bar chart displays the 2010 populations of 20 countries, ranked by name along the y-axis with population values extending along the x-axis. The visualization uses React components for structure and D3 v5 scales, including `scaleBand` for the categorical country axis and `scaleLinear` for the numeric population axis. Population data is loaded from a remote CSV file and rendered as SVG rectangles with native tooltips. The chart includes a formatted bottom axis that converts large numbers to abbreviated labels using D3's `format` function, with green bars and blue tick lines on a white background.