This example shows a horizontal bar chart displaying the top ten countries by 2020 population from a UN dataset. The visualization uses React for component rendering and D3 v7 utilities for data loading and scales. Axes are manually constructed with SVG elements, using `scaleBand` for the categorical country labels and `scaleLinear` for the numeric population values. Data is fetched as CSV, parsed with D3's `csv` function, and rendered as SVG rectangles within a React component.