This bar chart displays the population of the top 20 countries in 2010, ranked and sorted by country. Built with React and D3 v5, it uses `scaleBand` and `scaleLinear` to map data to an SVG canvas, rendering bars via custom `Marks`, `AxisBottom`, and `AxisLeft` components. The data is fetched from a CSV using `d3.csv` and formatted with `d3.format` to abbreviate large numbers. Styling includes custom tick lines, fill colors, and a Poppins font.