This example visualizes the top fifteen countries by their 2022 population as horizontal bars, with each bar’s length encoding population magnitude. Built with React and D3 v5, the code uses `d3.scaleBand` for the categorical y-axis, `d3.scaleLinear` for the numeric x-axis, and renders SVG `<rect>` marks directly in React’s JSX. Data is loaded from a CSV via `d3.csv`, and axes are drawn manually with `d3.scaleLinear.ticks` and tick text elements.