This example displays the top 10 most populous countries as a horizontal bar chart, with country names on the y-axis and population totals on the x-axis. Built with React and D3 v5, it uses `scaleBand` and `scaleLinear` to position bars and ticks, while manually rendering grid lines and axis labels via SVG elements. The data comes from the United Nations World Population Prospects 2019 CSV. The chart includes unlabeled tick marks and text labels for each category, without using D3’s axis components directly.