This bar chart displays the populations of ten countries from the 2019 UN Population dataset, using horizontal bars on a linear scale. The visualization is built with React components for rendering SVG elements and D3 v5 for data loading and scales. D3’s `scaleBand` positions the categorical country labels, `scaleLinear` maps population values to bar widths, and `format` converts tick labels into abbreviated units like “B” for billions. Axes are rendered as separate React components, with styling handled through CSS classes.