This example shows a horizontal bar chart of the top ten countries by 2020 population, ordered from largest at the top to smallest at the bottom. The bars are rendered as SVG `rect` elements inside a React component, with scales created using `d3.scaleBand` for the categorical y-axis and `d3.scaleLinear` for the quantitative x-axis. Data is loaded asynchronously from a CSV file using `d3.csv`, with the population column coerced to numeric values. The chart uses React state and the `useEffect` hook to fetch and transform the data before rendering.