This stylized bar chart displays the top 10 most populous countries, with each bar's length proportional to population size. Built using React and D3 v5, it customizes data-driven SVG rectangles (via the `Marks` component) and axis lines, with tick labels styled by a custom font and muted colors. The chart reads population data from a CSV URL, formats large numbers using D3's `format` function, and renders axes using `scaleBand` and `scaleLinear` scales.