This stylized bar chart displays the populations of ten countries for 2020, sourced from UN data loaded via D3's `csv` utility. The horizontal bars, rendered as SVG `rect` elements, use a teal fill and Poppins typography. React state manages the fetched data, while D3's `scaleBand` and `scaleLinear` position the bars and axes. A `<title>` element provides tooltips, and the x-axis tick labels are formatted using D3's `format` function.