This example shows a horizontal bar chart displaying the top 10 most populous countries in 2020, using data loaded from a CSV file via D3’s `csv` utility. The bars render as SVG rectangles, with a yellow circular background and black stroke. React manages the component structure, while D3’s `scaleBand` and `scaleLinear` handle the axis positioning. Custom React components like `AxisBottom`, `AxisLeft`, and `Marks` encapsulate the chart’s parts, and the axes are generated by mapping over tick values from the scales.