This horizontal bar chart displays the 2020 population of 30 countries, sorted in descending order with a green bar for each nation. The visualization loads CSV data from a GitHub gist and renders vector graphics using React with D3 v5, employing `scaleBand` for the y-axis and `scaleLinear` for the x-axis. Axes and bars are drawn as SVG elements via React components, with tooltips showing formatted population values.