This example creates a horizontal bar chart of country populations using React and D3 v7, rendering to SVG. It loads data from a CSV file and uses `d3.scaleLinear` and `d3.scaleBand` to map population values and country names to positions, with `d3.axisLeft` and `d3.axisBottom` generating the axes. The bars are drawn as `rect` elements appended to a grouped SVG container.