This example demonstrates how to combine React with D3 to render a horizontal bar chart of UN population data for ten countries in 2020. The code uses React hooks like `useState` and `useEffect` to load and manage the CSV data, while D3’s `csv`, `scaleBand`, `scaleLinear`, and `max` functions handle data parsing and scaling. Axes are drawn manually as SVG elements, with x-axis ticks generated via `xScale.ticks()`, and the chart updates reactively as data loads.