This chart displays the 2020 populations of 30 countries as a horizontal bar chart, with bars ordered alphabetically by country name. The visualization uses React to manage state and render SVG elements, while D3’s `scaleBand` and `scaleLinear` handle visual scaling. Population values are loaded via `d3.csv`, formatted with `d3.format`, and tooltips reveal exact figures on hover. The code demonstrates custom axis components, including left-side country labels and bottom population ticks with a G-to-B suffix conversion.