This example shows a horizontal bar chart of the top ten countries by population in 2020, using a combination of React and D3. The chart displays population values as proportional bar widths, with axis ticks and country labels generated from the loaded CSV data. React manages the component state and lifecycle through hooks like `useState` and `useEffect`, while D3’s `scaleBand`, `scaleLinear`, and `max` functions handle scaling and data processing. The visualization renders as SVG, with bars and text elements created declaratively in JSX.