This example displays horizontal bars for the populations of 30 countries from a CSV file, using a green fill on a rotated horizontal bar chart. The SVG renders through a React component that imports utilities from D3. The code creates a band scale for the y-axis and a linear scale for the x-axis, with axes drawn from imported modules. Tooltips on each bar show the formatted population value, using D3's `format` function to present numbers in billions.