This example displays a horizontal bar chart ranking the ten most populous countries, with the heading “highest population” and bars rendered in steelblue. It loads CSV data from a GitHub gist, parses the population column, and uses React hooks (useState, useEffect) to manage asynchronous data loading. D3 v5 modules (scaleBand, scaleLinear, max, csv) compute the scales and data parsing, while React elements generate SVG rects and tick labels. The visualization demonstrates a hybrid approach where D3 handles data preparation and scales, and React handles the rendering of marks and axes.