This bar chart displays the population of 20 countries in 2010, ranked by country name along the vertical axis and scaled by population on the horizontal axis. Built with React and D3 v5, it uses `scaleBand` and `scaleLinear` for positioning, with SVG `rect` marks and tooltip titles. Data is loaded via `d3.csv` from a GitHub repository, and axes are rendered as custom React components with D3’s `format` for tick labels.