This example shows a horizontal bar chart ranking the top 20 countries by population in 2020 (sourced from a CSV file), with a green bar for each country and blue tick lines on the axes. Built with React and D3 v5, it uses `scaleBand` for the categorical y-axis, `scaleLinear` for the numeric x-axis, and the `format` API to abbreviate population values (e.g., "1.2B"). SVG rectangles are rendered via the `Marks` component, with tooltips provided by SVG `<title>` elements.