This stylized bar chart displays the top 10 most populous countries using horizontal bars, with population values shown on the x-axis and country names on the y-axis. Built with React and D3 v5, it uses `scaleBand` for the categorical y-axis, `scaleLinear` for the numeric x-axis, and renders SVG rectangles via a `Marks` component. Data comes from a CSV file loaded with `d3.csv`, and the chart includes custom axes, tick formatting with `format('.2s')`, and tooltips using SVG `<title>` elements.