A horizontal bar chart displays the 2020 populations of 30 countries, sourced from a CSV file. Built with React and D3 v5, it uses `scaleBand` for the categorical country axis and `scaleLinear` for the population axis. SVG rectangles render the bars, with tooltips showing formatted values via `format('.2s')`. The chart includes custom `AxisBottom` and `AxisLeft` components for ticks and labels.