This example shows a horizontal bar chart of the top 10 countries by 2020 population, using data loaded from a CSV of UN population figures. The chart renders bars with SVG `<rect>` elements, with a linear scale for the x-axis and a band scale for the y-axis. React components structure the visualization, while D3 utilities like `csv`, `scaleBand`, and `scaleLinear` handle data loading and scaling. Axis components generate tick marks and labels, all within a fixed-width SVG canvas.