This example shows a horizontal bar chart of the top 10 countries by population in 2020, using React to render SVG elements and D3 to handle data loading and scales. The code loads CSV data from a remote URL with `d3.csv`, then uses `scaleBand` for the country axis, `scaleLinear` for the population axis, and manually creates tick marks and labels for both axes. Each country is represented as a `rect` whose width corresponds to its population.