This example displays a horizontal bar chart comparing the 2020 populations of the top ten countries from a UN population dataset loaded via `d3.csv`. The visualization uses React state to store the parsed data, and renders SVG elements dynamically. D3’s `scaleBand` and `scaleLinear` position bars and axis ticks, while React’s `useEffect`, `useState`, and `useCallback` manage data fetching and component updates. Axes and gridlines are generated using `xScale.ticks()`, with text labels for both countries and population values.