An animated bar chart displays the top ten countries by population in 2020 using React to render SVG elements and D3 v7 utilities. The chart reads CSV data from a GitHub gist, scales bar widths with a custom linear function, and derives y-positions from data indices. Grid lines, axis ticks, and country labels are drawn as SVG primitives, while the x-axis presents population values. The visualization pairs React state management with D3’s `csv` and manual scale calculations for layout.