This example shows a horizontal bar chart comparing population figures for the top 10 countries in 2020, using UN population data loaded as CSV. The visualization renders as SVG, with React managing the component state and D3 v7 handling data loading and scales. Key APIs include `csv`, `scaleBand`, and `scaleLinear` for positioning bars and ticks, while React’s `useState` and `useEffect` manage the asynchronous data retrieval. The chart displays country names on the y-axis and population values on the x-axis, with axis ticks and labels generated manually.