This example shows a horizontal bar chart of the top 10 countries by 2020 population, rendered as SVG through React components. React state tracks the data, initially loaded via `d3.csv`, while `scaleBand` and `scaleLinear` position bars and axes. The chart includes manually drawn tick marks and labels for both axes. The code uses React `useState` and `useEffect` hooks, along with D3’s `max` for scaling.