This example shows a horizontal bar chart of the top 10 countries by population in 2020, rendered as an SVG in a React component. D3’s `scaleBand` and `scaleLinear` position the bars and axes, while React generates the tick marks and axis labels as JSX elements. Population data loads from a CSV URL via `d3.csv`. The chart combines D3’s scales and data parsing with React’s state management and declarative rendering.