This example shows a horizontal bar chart comparing the 2010 populations of 20 countries, with each bar labeled by country name. The visualization uses React to render SVG elements, while D3 v5 provides the `scaleBand` and `scaleLinear` functions for positioning bars, and the `format` function to abbreviate large population values. Data is loaded from a CSV file using D3’s `csv` method, and hover tooltips display the formatted population value for each bar.