This example renders a horizontal bar chart of the top 10 most populous countries from the United Nations World Population Prospects 2019 dataset. Using React hooks (useState, useEffect) to load and manage data, it creates an SVG with D3’s scaleBand, scaleLinear, and max. Axes are manually drawn by mapping xScale.ticks() to lines and text, while y-axis labels are generated from the domain. React and D3 are combined, with D3 handling scales and data parsing, and React managing the component lifecycle and SVG output.