This visualization shows the 10 most populous countries in 2020 using horizontal bars, with country names on the y-axis and population values scaled on the x-axis. The graph is built with React components that render SVG elements, using D3’s `scaleBand` and `scaleLinear` for positioning and sizing, while axis tick marks are generated with `xScale.ticks()`. Data comes from the United Nations World Population Prospects 2019, loaded via `d3.csv` and filtered to the top ten entries. The code organizes reusable components for axes and marks, demonstrating a modular approach to chart construction in React with D3.