This stylized bar chart displays the population estimates for the top ten countries using horizontal bars. Built with React and D3 v5, the visualization employs `scaleBand` and `scaleLinear` for positioning, with bars rendered as SVG `rect` elements. The data is loaded from a CSV file of UN Population 2019 estimates, formatted with D3’s `format` function to abbreviate large numbers (e.g., “1.4B”). Axis components are custom React components, and hover tooltips show formatted population values.