This example shows a horizontal bar chart of the top 10 most populous countries in 2020, with axes rendered using React components and D3 scale functions. It loads CSV data from a GitHub-hosted UN Population dataset, parses the population column with `d3.csv`, and uses `scaleBand` and `scaleLinear` to position bars and ticks. The SVG output is created in a React component, with axis lines, tick labels, and rectangles generated from mapped data arrays.