This example presents a horizontal bar chart of the top 15 countries by 2020 population, sourced from the United Nations World Population Prospects 2019. A React component renders SVG rectangles for each bar, using D3’s `scaleBand` and `scaleLinear` for the y- and x-axes, respectively. The chart includes labeled axes generated by custom `AxisBottom` and `AxisLeft` components, with tick marks and text positioned via D3’s scale methods.