This example displays a horizontal bar chart of the top 10 most populous countries, with labeled y-axis categories and a numerical x-axis scale. It uses React to manage the data state and render the SVG, while D3 v5 provides the `scaleBand`, `scaleLinear`, `max`, and `csv` loading functions. The axes and bars are constructed from D3 scales, with tick marks and labels positioned using SVG transforms. Population data comes from the United Nations World Population Prospects 2019 dataset, loaded via a CSV URL.