This bar chart displays the populations of ten countries from the UN Population 2019 dataset. Horizontal bars are rendered as SVG rectangles using React, with scales created via D3’s `scaleBand` and `scaleLinear`. Axis components are custom-built in JSX, and D3’s `format` function converts tick labels to abbreviated values like “1.2B.” A hover tooltip is provided through the SVG `<title>` element, and the layout uses a fixed 960x500 viewport with Poppins typography.