This example shows a horizontal bar chart of the 30 most populous countries from a 2020 dataset, using population values displayed on the x-axis and country names on the y-axis. The React-based visualization uses D3 v5’s `scaleBand` and `scaleLinear` for positioning, with bars rendered as SVG `<rect>` elements via the `Marks` component. Data is loaded asynchronously from a CSV using `d3.csv`, with axes generated by `AxisBottom` and `AxisLeft` components. The chart includes formatted tick labels (e.g., converting billions) and a title, with green bars styled via CSS.